ATAR Notes: Forum
Archived Discussion => Mathematics and Science => 2013 => Exam Discussion => Victoria => Mathematical Methods CAS => Topic started by: Phy124 on November 07, 2013, 03:14:35 pm
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Please use this thread as your avenue for discussion regarding the second methods examination.
Once again, a reminder to all students; discussion about exams is great, however, don't forget you have other exams to study for, too!
Lastly, congratulations on completing Mathematical Methods 3&4, I hope you all did well and achieve the scores you desired :)
*Note: This thread is for examination discussion NOT for study score predictions. If you wish to have a score predicted please reply in this thread, this thread or make a topic here. Users who choose not to take note of this rule will be dealt with accordingly.
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Man that exam was easy! I am so happy right now.
Whatd everyone think of that last question? They were practically giving away marks.
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You heard it here first: A+ cut off of six marks.
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The comments above might be sarcastic but I'm not sure.
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Absolutely brutal.
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The comments above might be sarcastic but I'm not sure.
I really hope that they are ... That last part of the last question was so bad
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The comments above might be sarcastic but I'm not sure.
That's what I'm thinking. Multiple choice was fairly difficult, but most of the extended response was standard and straightforward.
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can't even
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my asshole has been enlarged
ouch
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Quite annoyed that one question removed access to 8? marks.
Even more annoyed that I got said question right, but that you couldn't use CAS to rearrange it thus I got it wrong.
Not pleased at all.
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The last 8 marks were ridiculous. Left completely blank. Should have been a show question for the gradient of the tankent on terms of k so you could do the questions afterwards
What % of the state does everyone think will get the last few qns right?
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On the upside we have a return of Tasmania Jones haha!
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I made so many mistakes.
Tasmania jones is going to die. But I don't really mind, I hate him anyways :)
AND IM DONE FOREVER!
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I found it alright but it was soooo long.
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Ok I'm actually gonna be honest... That was NOT easy. Hope exam 1 can make up for that
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Omg I'm so shit at methods, couldn't even realise to sub in 4 and 0 to find k in terms of m. I am so stupid; thinking back it was so simple FFS.
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The comments above might be sarcastic but I'm not sure.
Don't misunderstand - I'm not sure if I even got 6 marks.
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The last 8 marks were ridiculous. Left completely blank. Should have been a show question for the gradient of the tankent on terms of k so you could do the questions afterwards
What % of the state does everyone think will get the last few qns right?
I wouldn't be suprised if 60% left it blank. There was only one kid at my school that got it right and I had to make up an answer to continue
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The last 8 marks were ridiculous. Left completely blank. Should have been a show question for the gradient of the tankent on terms of k so you could do the questions afterwards
What % of the state does everyone think will get the last few qns right?
Exactly what I was thinking. If you didn't get the gradient, couldn't do the other questions.
The last question was difficult but I think the rest of the paper was accessible.
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Omg I'm so shit at methods, couldn't even realise to sub in 4 and 0 to find k in terms of m. I am so stupid; thinking back it was so simple FFS.
Don't worry. The gradient was different so (4,0) was no longer on the tangent
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The last questions was absolutely horrible how do we work out the equation of the tangent with no points
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Seriously that k question. I knew what needed to be done for the very last page, I just couldn't find the gradient in terms of k.
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Last page blank, gah! I didn't even have time to go over my other questions (so so so many errors!)
Was that exam harder than previous ones or is it just me? :/
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I thought it was harder than pervious years!
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Last page blank, gah! I didn't even have time to go over my other questions (so so so many errors!)
Was that exam harder than previous ones or is it just me? :/
Yes, my last page is blank too. I put something down for part c as a guess in the last minute.
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Don't worry. The gradient was different so (4,0) was no longer on the tangent
This wasn't even the last question lol it was to find velocity of the train. I didn't even attempt the last question. Oh well. 50/80 hopefully.
Also that transformation question wtf? How can you multiply the image of two points to get a number? Just super confused :(
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Last page blank, gah! I didn't even have time to go over my other questions (so so so many errors!)
Was that exam harder than previous ones or is it just me? :/
In my opinion, the paper was moderate (neither hard/easy) but the last question is what's going to differentiate the top from everyone else.
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Omg I'm so shit at methods, couldn't even realise to sub in 4 and 0 to find k in terms of m. I am so stupid; thinking back it was so simple FFS.
Don't worry , nobody from my school got that.
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I thought multiple choice was tougher this year. ER was alright except the last parts of question 4 which were just brutal.
also I got the maximum speed of Tasmania Jones rollercoaster at 1.7 km per hour... oops.
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Eh did everything fine except for that weird transformaation question..
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I'm 100% sure the last question required that x/a y/b = 1 or something formula for when you know an intercept, but I didn't have it in my bound reference.
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Really tough exam,
Managed to do the last questions However I skipped the Transformation Q' P' or whatever, I has no idea what it was asking.
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This wasn't even the last question lol it was to find velocity of the train. I didn't even attempt the last question. Oh well. 50/80 hopefully.
Also that transformation question wtf? How can you multiply the image of two points to get a number? Just super confused :(
MY GOSH I KNOW! It was extremely badly worded X'P' meant the line segment not the product. They should have written, "the line segment X'P' = ..."
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well, as long as you guys made up an answer for the first part of the last question afterwards, but showed working even if using an incorrent number you would still get consequential marks for method for the remaining of the paper.
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What do you guys think of this Methods of Finding the minimum value of X for point Q to be closest the origin;
(16-x^2/ all over 4)^2 + X^2 = Distance squared
Square root the above
Derive it to find Minimum value
Solve for zero for the domain (0<X<2)?
Then you get the X value?
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Tasmania Jones = my arch enemy
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Gradient for last Q = -root(k-4)?
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MY GOSH I KNOW! It was extremely badly worded X'P' meant the line segment not the product. They should have written, "the line segment X'P' = ..."
Yeah I had no idea WTF they were asking, so horridly worded, Hopefully they just give everyone the Marks XD
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What do you guys think of this Methods of Finding the minimum value of X for point Q to be closest the origin;
(16-x^2/ all over 4)^2 + X^2 = Distance squared
Square root the above
Derive it to find Minimum value
Solve for zero for the domain (0<X<2)?
Then you get the X value?
Dont have a CAS handy but if you got 2root2 you got the same as me at least.
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Dont have a CAS handy but if you got 2root2 you got the same as me at least.
Yeah Its 2 Root 2... funny thing is, I didn't do it in the exam -_- was more of a hindsight thing
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Tasmania Jones' velocity equation got me, the oh there's this support beam thing in the middle of the curve where it's a max, the last 8 marks, transformation with X'P'Q', and some other crap.
Damn it.
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omg tassie jones, why!?!
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Thank god, so much easier than yesterday!
Only thing I'm not sure about is last question, can someone run through it?
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For the weird x-y dilation question I just ended up using similar triangles because I was so desperate :p
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For the weird x-y dilation question I just ended up using similar triangles because I was so desperate :p
I think I just applied matrices and it worked? What was the trouble with that one?
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Any predictions on A+ cut-off? :?
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Did anyone get k=16/3 for the minimum area for the last page??
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That was so bad but hahaha i don't even care.. MATHS METHODS IS OVER FOREVER AND EVER AND EVER!!! I COULD ACTUALLY CRY OF HAPPINESS. The last time I ever felt this happy was when we finished the methods course last term :')
omg. my life will be methods-free for eternity. This is amazing
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It definitely solidified how bad at maths I always thought I was. Freaking ridiculous, especially with the last question. Also I ran out of time :-\
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The MCQ had too much math theory ehh
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Yep and k=8 for maximum.
I can't believe I didn't get those P'X' questions now... I thought it meant multiplied together but it was just a line segment...
Wow true example of exam pressure.
It was a badly worded question... I couldn't even figure out was it was asking tbh.
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Could anyone find the second tangent equation?
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Ok so because i didn't know how to do the last page for the maximum question I just pit k=8 because of the information provided at the start of the question. there's no working though Haha it was just put in the last few minutes.. does that stilll get a mark?
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in general i think u guys should remember that vce uses a bell curve with methods, so if most people did bad then generally they will lower all the thresholds to get certain grades, heck ive seen one time where you could have failed the exam 2 (below 50%) and still get a B. So do not stress too much peoples, and focus on other exams, everything will work itself out!
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As you would have guessed based on exam 1, it was quite difficult.
Multiple choice were a bit harder, i found the questions a bit different to previous years, they didn't have as many straight forward easy mark questions. Different format i guess didn't seem like i was answering a vcaa paper.
Questions 1,2,3 were relatively straight forward for extended response,which was a surprise as the Tasmania Jones questions in recent years were quite difficult.
Question 4 was ridiculous, 16 marks it was worth i think, I would have struggled to get 1........
Guess that's the question that will separate everyones scores.
Only other parts I struggled with were last questions of both 1 and 3 in extended and a few of the multiple choice.
Anyway glad it's over, as well as the rest of my exams :)
Anyone have any idea about the cutoff marks?
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Omg so much butt rape...
That transformation question was retarded, I sat there trying to multiply coordinates and try to get one number...
Then another 30mins dwelling on that last tangent and last 5 mins it clicked, and did (a) (b) but missed out on the rest...
And what a boring Tasmania question so disappointed!!
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If people found both exams really difficult would there be a potential for higher scaling or not?
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Exam 1 was the easiest exam i ever done in my life. Exam 2 was bullshit (multiple choice wtf?!). Stfu VCAA
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That MC was so ugh, I aced the 2011 and 2012 MC's with almost 20 or 21 out of 22. For this, I had to guess at least 6 just to keep on moving to finish the paper.... :( So many people from my school said it was good.. let's just say I felt the opposite :-X
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If people found both exams really difficult would there be a potential for higher scaling or not?
it all depends on how the performance of students in the methods cohort compared to other subjects. but more likely if it was a difficult exam they will reduce the cutoffs of the grades (e.g. make an A+ = 75% mark or above)
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Could anyone find the second tangent equation?
Just did the question. The way I did it was define the tangent point to be (a, g(a)), with the tangent being:
y - g(a) = g'(a) (x-a)
And then subbed in (0, k) so that I can get rid of the 'a' in the tangent equation by working out a in terms of k and then subbing into the tangent equation.
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Does 336metres ring a bell for anyone
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So if I got essentially 100% except for the last question where I lost 8 marks, is that a good score?
Also how 2 last question plox
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Anybody get 336 meters as an answer for one part in qn 3 or am I just wrong?
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(http://s12.postimg.org/pcar1k1bx/tasmania_jones.jpg)
This is my best photoshop skill :P
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(http://s12.postimg.org/pcar1k1bx/tasmania_jones.jpg)
This is my best photoshop skill :P
love it
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Literally everyone in my school came out of the exam with blank faces.... no cheers of celebration or anything.
Did really super stupid things. I think Multiple choice was harder than last year. Extended response was ok. Until the last page. I honestly thought I was misreading something... had no idea what to do D:
A+ predictions?
Definitely in the 50s D:.... I reckon... Mid 50s? Considering last years A+ cut off was 61... Or is that waayy to low.
I thought I'd be so relieved after my 3/4 exam. I'm feeling really tense and anxious. Dreading the 16th of December D:
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So if I got essentially 100% except for the last question where I lost 8 marks, is that a good score?
Also how 2 last question plox
provided that u got 100% for everything else, thats still an mid A+ on average if using data from previous years i think the average is liek 65/80 for an A+ across 6 years.
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They really should have made the question 4c) a 'show that' question....
If you couldn't solve 4c) and find the gradient in terms of k, you were effectively barred from the whole last page.
That's totally stupid.
Not to mention the fact that X'P' and all that was just poorly worded. I didn't even realise it was a line segment..
Arghhhh!
What were VCAA thinking?? :-\
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Does 336metres ring a bell for anyone
Anybody get 336 meters as an answer for one part in qn 3 or am I just wrong?
I recall these numbers too. Fingers crossed we're right!
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That exam felt really long.
The worst part is that 2k14 grads are gonna look at it and be like "lmao that was a gift" and we'll just cry about it.
</3 Not feeling good. Left last page blank.
[henry vs the exam: the anime]
me: exam-chan, please let me get an A+
exam: b-baka, who do you think I am?
me: methods I just wanted-
exam: NOOooooooo
me: it's Tasmania Jones isn't it, you love him more don't you?
okay I'm done. Time to read over my notes for specialist tomorrow.
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Omg, so happy. I guessed 7 MC questions and I got at least 4 of these guesses right without working them out, could even be 5 correct out of 7 guesses if I could remember what I put down for one of the MC. RELIEF ;D I like never guess things right??
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love it
Thank you :)
That exam felt really long.
okay I'm done. Time to read over my notes for specialist tomorrow.
If you found it long, many people would find it long too. So don't be too upset about it. Good luck with your spesh tmr!
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Well by the looks of the solutions I got 68-69/80, which might still net me an A+. Let's hope that's the case. :3
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Yeah I guessed two of the mc and turns out the were both right thank you jesus
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And what a boring Tasmania question so disappointed!!
Hello, look at the questions, now back to me, now back to the character's name, now back to my username. Sadly, he isn't me, but he is my dad. Look up to your post reply, now back here, what did you just say? You said the questions are boring? My dad never disappoints anyone. I'm on a chair.
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Just looked through the suggested answers. Hoping for a b-b+
Might scrape a 35+ yay!
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Anybody get 336 meters as an answer for one part in qn 3 or am I just wrong?
Oh crap, I just realized I forgot the square root when I was working out the distance. Would have gotten 336 metres as well otherwise :/
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God damn I stuffed up the last 6 marks and only had time to fix 4 of them, so I tanked the last 2 marks, one minute from 80/80! I blame Tasmania Jones, hope he falls off his ride, sinks to the point G and dies. Anyway, I found the paper doable but some questions quite tough, especially that MC question with related rates (Q12?) I haven't really done full past VCAA Exam 2's under those conditions, was it harder than usual this year?
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Omg i didnt even know you could have more then one equation for a density function. Whateven was that ive searched through my maths book and i cant find one :/
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I was paranoid during the exam. Every time my calculator screen turned off I got a mini heart attack :/
For the last question I ran out of space and had to write on the blank page beside it. Will they accept it? I wrote the question number beside in case.
I can't believe I didn't get those P'X' questions now... I thought it meant multiplied together but it was just a line segment...
I sat there for like 5 mins thinking how the heck do you multiply co-ordinates??
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I'm not a particularly strong methods student, but every single person in my cohort found that exam difficult.
I think everyone has got to agree that the last 6 or so marks of the paper weren't achieved by the vast majority of students.
I can just see the assessors report now 'this question wasn't well answered.'
Fingers crossed that we'll all gain the marks we want.
It's done! :)
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So considering last year's A cutoff was 61.5/80, what do people think this year's will be?
Most of the people I've spoken to said that they found the exam much tougher than previous years, but I have a suspicious that the reason for that may just be the pressure of doing it "for real", rather than at home/in class.
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I thought it was easier then our practice exam but harder then last years exam.
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So considering last year's A cutoff was 61.5/80, what do people think this year's will be?
Most of the people I've spoken to said that they found the exam much tougher than previous years, but I have a suspicious that the reason for that may just be the pressure of doing it "for real", rather than at home/in class.
I think it would be similar to last year. Probably 55-60.
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I thought it was easier then our practice exam but harder then last years exam.
Same! What company was your Trial Exam? Ours was 2013 Heffernan.
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I found the gradient.
Almost. I chose the wrong root. (I did positive instead of negative)
So I couldn't obtain feasible answers (within given domain etc.) for the following parts and ended up leaving them blank...
So close yet so far...
Shattered as. :'(
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I honestly have no idea where it was from, it had a question about a sign in it though that was a cos or sin graph (i have so many exams spread all over my bedroom floor)
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this exam was completely fucked
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Ugh i want a thirty soo bad but after that exam i highly doubt im going to get it
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Please take note of the edit in the original post;
*Note: This thread is for examination discussion NOT for study score predictions. If you wish to have a score predicted please reply in this thread, this thread or make a topic here. Users who choose not to take note of this rule will be dealt with accordingly.
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Last question, also got gradient = -root(k-4)!! But then I tried to solve dy/dx =0, and only got one answer when I needed to find both minimum and maximum, so made up k values to get method mark for subbing it back into a(k) to find area... And x'p' question weird notation.. Otherwise not too bad, multiple choice was at times tricky but doable and the other extended responses weren't too bad, I reckon A cuttof similar to last years
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Did anyone else feel like that exam was very calculus focused? (I mean more so than usual) Every question had a couple, find this length then find the maximum/minimum. The train supports, the garden, the OQ thing in Q4, the k thing in Q4. In addition, there was no normal probability except for MC Q22 o.O Also, I thought VCAA was a bitch with changing how many decimal places they wanted this year: every fucking question!
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Yeah so much calculus! Like no norm distribution and hardly any graphing
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The last 8 marks were ridiculous. Left completely blank. Should have been a show question for the gradient of the tankent on terms of k so you could do the questions afterwards
What % of the state does everyone think will get the last few qns right?
I agreee, I didn't do the four last questions, losing 8 marks. I had no idea how to get the gradient in terms of k. All the ways I was thinking of didn't seem to apply.
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I agreee, I didn't do the four last questions, losing 8 marks. I had no idea how to get the gradient in terms of k. All the ways I was thinking of didn't seem to apply.
yeah, even after looking up thushan's and alwin's answers I didn't get it. The question was ridiculous and should have been "show that" for sure. But hey, it might mean lower cutoff!
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Without a "show that", it left most of us in the dark :-[
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Without a "show that", it left most of us in the dark :-[
Yeah, and I think they needed to give us more information, it wasn't easy to pick out from.
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Overall I don't think that would really matter though seeing as there are plenty of kids in the same position as you.
It just truly separated the top students from the bottom students.
Unlike spesh today, it was all about whether you made mistakes or not and well... Im looking at a raw score of 33 right now lol
So what was the specialist exam like?
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Overall I don't think that would really matter though seeing as there are plenty of kids in the same position as you.
It just truly separated the top students from the bottom students.
Unlike spesh today, it was all about whether you made mistakes or not and well... Im looking at a raw score of 33 right now lol
But the scaling!! :D
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Did anyone manage to get the length of EF thing in the Tasmania jones one?
How were you supposed to fine the coordinates of E :\
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Did anyone manage to get the length of EF thing in the Tasmania jones one?
How were you supposed to fine the coordinates of E :\
EF represented the maximum vertical length between the two graphs, which was a maximum of top graph - bottom graph ie L=y-f(x) where y was the equation of the line segment AB and f(x) was the cubic function for the mountains/valley, find dL/dx and let it equal zero to solve for the value of x that makes L a maximum, that's the x-co-ordinate of E and F. Sub that value back into the function L to get the actual length.
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EF represented the maximum vertical length between the two graphs, which was a maximum of top graph - bottom graph ie L=y-f(x) where y was the equation of the line segment AB and f(x) was the cubic function for the mountains/valley, find dL/dx and let it equal zero to solve for the value of x that makes L a maximum, that's the x-co-ordinate of E and F. Sub that value back into the function L to get the actual length.
omg that actually makes sense.
oh dear I'm gonna get like raw 20.
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I found the gradient.
Almost. I chose the wrong root. (I did positive instead of negative)
So I couldn't obtain feasible answers (within given domain etc.) for the following parts and ended up leaving them blank...
So close yet so far...
Shattered as. :'(
Same thing as you except i entered the equations wrong into my calc. Lol...
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Yeah, imo, it was probably the hardest vcaa Methods exam set in past ten years or so. Having said that, while the mean would be lower than in previous years, I still thought that the exam was doable and that those who want to achieve top scores would still have to have done well in both exams.
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So do you think the cutoff for a 50 will be a 117 or a 118?
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By 117 or 118, do you mean the total of the raw scores for Exam 1 and Exam 2?
Normally, VCAA doubles your Exam 1 and Exam 2 scores (so they are out of 80 and 160 respectively).
But, I dunno. I think full marks for both exams was achievable, so 119+ is a 50 (as in previous years). Perhaps 118 (117 - I'd say is a 48(conservatively)-49) will be a 50 this year.
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Yeah I'm hoping my 118/120 is enough for it.
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Just did that exam under time conditions...... Finished comfortably with 30 minutes to spare. It was so easy! Woo! Go me 80/80.
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Just did that exam under time conditions...... Finished comfortably with 30 minutes to spare. It was so easy! Woo! Go me 80/80.
FurtherStar? 50 for you FurtherStar. You go FurtherStar!