ATAR Notes: Forum
Archived Discussion => HSC Exam Discussion 2018 => Results => New South Wales => Maths Exams => Topic started by: Joseph41 on October 09, 2018, 12:01:23 pm
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(https://i.imgur.com/7IBZwuo.png)
This thread is for all exam related discussion. Was it easy? Was it hard? What did you get for 'that' tough question?? Feel free to pop any and all of your thoughts below.
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fair exam I reckon but definitely harder than last years what did u guys get for 14.b)ii) after the first binomial part?
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fair exam I reckon but definitely harder than last years what did u guys get for 14.b)ii) after the first binomial part?
like 23C4 * 2^19 or something
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The paper was fine but I was just so unprepared which meant that the whole experience was hellish.....
The whole time all I could think about was that it didn't matter because this is why I did 13 units 🤔😭
The end
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It was fine up until Q14 which was quite hard, same as Ext2 really
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Dissapointed overall in how I performed, was really to get as close to 100% as possible :/ So yeah everything was fine until Question 14 basically. I am confident that I got all the marks for all of the questions I solved, but I struggled for time, and struggled with:
Finding the inverse function question for 3 marks. I made some rearranging attempts, but couldn't solve - probably got 1/3 marks.
There was another disgusting quadrilateral with random angles question in 14, like MX2, and I got close but couldn't quite crack - think I got 2 out of 3 marks
The binomial part i) I got very close again, but didn't quite crack - probably 2/3 marks again
And I didn't get time to attempt the last 5 marks!! :(((
Add to that maybe MCQ wrong and another 1 mark for careless mistake, and I'm looking at around 59/60 out of 70. Which is still really good, but not what I was hoping for :( Hopefully it scales well this year since it was definitely harder than the last 2 or more years papers.
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Dam 25 raw mark here I come! Even mc I couldnt do the last 2 qs. I just wrote some random stuff for q12 and 13 hopefully I could get some marks. Even the induction like I checked LHS equal the but no it didnt the negative sign was meant to be plus. What did I do wrong. Did anyone else run into the same problem?
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Yeah, definitely harder than last year's, but I found it alright! What did everyone get for q10? I was tossing up between A and B, ended up putting B.
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I was prepared for the exam to be very hard for me, I've never managed to complete a whole paper because I either run out of time or can't do some questions, so I think that helped to keep me calm in the exam when I couldn't do some questions.
I thought the multiple choice and question 11 in particular were fine. There were a few things that I struggled with in question 12 and 13, like the ferris wheel question and the porabola one where you had to prove that STBA or something was a cyclic quadrilateral and find the diameter. I was annoyed for the inverse function question I did the first 2 parts using the middle section of the graph before realising f(x) was for x > 1, so I had to redo some of it, and I couldn't get part iii. And I agree that question 14 was really hard, I only did the binomial theorum question and part i and ii for the last question.
Overall I found it very hard, and so did the other people in my class. I think I did not too bad in comparison to the practice tests I've done, but I don't really know. Glad it's over!
like 23C4 * 2^19 or something
Same! I was so happy that I managed to do this question at all.
Dam 25 raw mark here I come! Even mc I couldnt do the last 2 qs. I just wrote some random stuff for q12 and 13 hopefully I could get some marks. Even the induction like I checked LHS equal the but no it didnt the negative sign was meant to be plus. What did I do wrong. Did anyone else run into the same problem?
That's frustrating, but I think everyone found it harder than previous years so hopefully it scales well. I just guessed the last 2 multiple choice as well, mostly because I didn't want to waste time working them out, but I had no idea for question 9 anyway.
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Yeah, definitely harder than last year's, but I found it alright! What did everyone get for q10? I was tossing up between A and B, ended up putting B.
I put B as well, hopefully we right.
Most of the paper was challenging but alright, the final limiting sum tho had so many ways it could be expressed that I didn't really get there. Didn't read where x>1 for the inverse function question so lost 1 or 2 there, but besides that, consdering we were predicting a harder paper, it was alright :)
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Truly tragic. Spent an hour on Q14 and only got half of them right. Can't believe i didn't see some of them.
The way the test was set out didn't seem that good, it was easy up until q14.
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Common consensus is a bomb in the last question again?
Was honestly hoping that NESA wouldn't do what they did with MX2 again but well, if that was really the case, once again I feel bad for you guys :(
I haven't seen the paper yet at this stage to properly critique
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Common consensus is a bomb in the last question again?
Was honestly hoping that NESA wouldn't do what they did with MX2 again but well, if that was really the case, once again I feel bad for you guys :(
I haven't seen the paper yet at this stage to properly critique
Yeah so it was just really weird I guess :// Definitely harder than last year!! It would've been nice to have the last question be a projectile motion question or something, but nope, they went with another weird series sort of question, and ANOTHER circle-but-not-circle-geometery question??
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Yeah so it was just really weird I guess :// Definitely harder than last year!! It would've been nice to have the last question be a projectile motion question or something, but nope, they went with another weird series sort of question, and ANOTHER [color=redcircle-but-not-circle-geometery question??[/color]
Seriously!? What the fuck NESA. The MX2 one was bad enough as is.
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Most part of exam was straight forward until q14. The cylic quad gave reminded me of mxt 2 last question. Felt there was more emphasis on domain and range and curves in general than previous years.
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The probability question in Q14 was a hypergeomteric probability, so I got it quickly thanks to RuiAce.
MCQ was decent and all the way up till Q14 was fine, except for that inverse where I just completely forgot about that quadratic formula.
Half of 14 was fine, until that sum. I kinda got it, but I needed 2 or more steps to get that answer.
In the end, I lost time, and I'll probs get 64+ raw.
But definitely easier than expected
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Do you guys reckon it was a hard exam? I found it ok, but I made many errors, hoping I can still scape a band 6. What is the E4 cutoff usually for Ext 1?
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its plane geometry and circle for 14a) and 14c)then pseudo-circle geo which is actually plane geo and then use those properties to prove a GP expression for the limiting sum of quadrants and then prove an inequality which felt like a harder 3U question for a 4U paper...
for some reason the guys making the papers are so obsessed with geometry and that hit my soft spot so hard since i barely practice for plane geometry T_T... and what the fuck are they doing putting 2U logs in the paper (although it is easy)... I smashed projectiles easy but... the time I spend perfecting exponential growth and decay, shm, and a couple of otherz just goes in vain T_T... I wonder how can I get HD in uni maths with my lvl right now??? my E4 T_T...
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Do you guys reckon it was a hard exam? I found it ok, but I made many errors, hoping I can still scape a band 6. What is the E4 cutoff usually for Ext 1?
In 2017, a 76% raw mark was alligned to 90, so a band 6. This year was harder than last year, I would strongly argue, so probably around 74% being a band 6. But I could be wrong, I am just using info from http://rawmarks.info/wiki/Mathematics_Extension_1
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Q11 integrate by substitution answer -4/3 ?
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Q11 integrate by substitution answer -4/3 ?
I got -8/3
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Q11 integrate by substitution answer -4/3 ?
Fairly certain I got -8/3. After substituting both of the values, you get -4/3 -4/3, leading to -8/3. Again I could be wrong, but if I am right, you would only lose 1 mark as you likely only messed up your final calculation, and would get the 2 marks for the rest of the working out
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its plane geometry and circle for 14a) and 14c)then pseudo-circle geo which is actually plane geo and then use those properties to prove a GP expression for the limiting sum of quadrants and then prove an inequality which felt like a harder 3U question for a 4U paper...
for some reason the guys making the papers are so obsessed with geometry and that hit my soft spot so hard since i barely practice for plane geometry T_T... and what the fuck are they doing putting 2U logs in the paper (although it is easy)... I smashed projectiles easy but... the time I spend perfecting exponential growth and decay, shm, and a couple of otherz just goes in vain T_T... I wonder how can I get HD in uni maths with my lvl right now??? my E4 T_T...
Loool same tho, wasn't expecting them to put geometry in the last question of BOTH 4u and 3u... saw the quadrilateral thing with the angles during reading time and thought "frick not again -_-"
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Fairly certain I got -8/3. After substituting both of the values, you get -4/3 -4/3, leading to -8/3. Again I could be wrong, but if I am right, you would only lose 1 mark as you likely only messed up your final calculation, and would get the 2 marks for the rest of the working out
.. Just realised i subbed in 2 instead of 4
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.. Just realised i subbed in 2 instead of 4
Haha, you'll be good.
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Q8 B?
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Q8 B?
Was Question 8 the values of a,b ,c and d one?? Let me know what the question was and I can share what I answered.
For the values of ABCD one, I put D, where D was definitely -1, and subbing in the other zeroes meant that A = -3. The only answer with those two values was D.
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Hi, absolutely bombed MX1 test idk wtf happened. Got like 2 marks in q14 and accidentally missed an easy question in questioon 11 coz didnt see it. I', probs expecting 68-70% - for this test, would that scale to atleast 85? maybe 87?
Hey, you arent the only one whose disappointed with how they went I absolutely bombed it and I was aiming for quite high E4. I think 70% may be closer to 89, I feel the exam was difficult compared to some of the previous exams. What were you aiming for before this exam?
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I wouldn't worry about it now. It's over and done with. It's was a pretty hard test across the board and a lot of people struggled, myself especially. The key is to look at the positives. One, it's another exam done, and one more towards finishing the HSC. Two, as it was a hard test a lot of people did struggle, so collectively across the state our marks will be scaled up. Good luck with the rest of your exams!!
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https://www.matrix.edu.au/2018-hsc-maths-ext-1-exam-paper-solutions/