ATAR Notes: Forum
VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: inspire on October 24, 2010, 04:27:18 pm
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Hey guys
This is a exam 1 my tutor wrote :)
Its pretty good, nice concepts etc etc
Check it out
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sweet, have u got solutions? :)
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Sorry there arent any solutions
BUT
ive done the it and yeah just ask and i'll tell you answers~
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Thank you
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thnx heaps. it does look pretty good
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Thanks, seems very relevant to the new style of exam 1s.
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that looks pretty difficult; it'd be great if solutions were posted.
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thats ridiculous...
wont be anything like the exam...
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Question 6 looks good =p
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Haha Yep.
That crazy modulus one will probably throw me a little.
Will give it a crack tomorrow!
Thanks.
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Question 6 looks good =p
Hey matty since you're a maths genius write up solutions to this exam for us :P
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I thought you were the maths genius?
Why don't you post up your solutions then others can critique - just like it is done in the English boards.
I am willing to help where I can though; but I'm way too lazy to type up full solutions. (Plus I'm likely to get things wrong - not such a good thing in "solutions"...)
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I thought you were the maths genius?
Why don't you post up your solutions then others can critique - just like it is done in the English boards.
I am willing to help where I can though; but I'm way too lazy to type up full solutions. (Plus I'm likely to get things wrong - not such a good thing in "solutions"...)
I was subtly responding to your karma msg....I thought you'd get it lol
Maybe after thursday, when I don't have to freak out about English!
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Hey guys :)
I asked him for solutions and i will have them soon~
Tell me what you guys thought of it cuz he is going to continue to write more for his tuition.
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Over the top, wayyyyyyy overkill.
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needs to be more challenging
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Whoa, maybe i'm just weak in methods, but this paper crushed my confidence :|
please dont tell me the vcaa exam 1 will be like this...
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It will be very, very different.
There will probably be only 1 question of the difficulty of the hard ones in here.
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Heys inspire; can we get the solutions for this?
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I am getting the solutions on Monday!
I'll post them up them~
Yeah i agree this was really hard it sorta tested your understanding of concepts more than how many exams you have done :S
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they are all standard vcaa questions. Q11b,c are spesh qs.
Q8 has a common denominator
Q6 f(x)=|2x-x^2| for x>/=0, symmetrical about y-axis.
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i will do it now and post up my answers tomorrow morning, this is my contribution to the maths forum as you guys can set about telling me how im wrong...that way we all learn, also i am not the best at maths as i am hoping to get a 37+ raw..i aint going for a 50 so dont kill me when i get half wrong...
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umm, i just tried to do the exam and realized i have no idea on literally a half of it...No point uploading my answers i guess...
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The heights of boys in year 12 are normally distributed with a mean of 175cm and a standard deviation of 10cm. it is known that pr(Z>0.5)=0.3
a) Using this info find probability that a boy selected at random is greater than 170cm
b) find probability that a randomly selected boy is more than 180cm given that his height is above mean
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Thanks for this! pretty challenging exam
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sigh.
i'll post the answers i got tomorrow when i did this tomorrow~
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Doing it now. Question 10 was my favourite, cleverly thought out.
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Since everyone was asking for solutions.
BUT i couldnt obtain the solutions.
This is what i got as the answers:
1. m>8/5
2. N member of R/+-Root2/9 P member of R
3. (2^3X11)/3^11
4.a) Hybrid function
b) loge(2/3)
c) Forgot >.>
5. (kpi)/2 +- pi/6 k member of Z
6. a)Do on calculator
b) x = 1
7a) Dilation of a factor of 1/2 in the y axis. Dilation of a factor of 3 in the x axis. Reflection in the y axis. Translation of 3 right in the x axis
b) m(-2x+6)^3/2 -3
8. _____
9.a) b)Check on calculator
10) 6cm^2/second
11a) Something really long :|
b) It is the distance traveled between 0 and 2 seconds
c) Find the average value of velocity between 0 and 2
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i did this ages ago so prove me if i'm wrong.
GOOD LUCK TOMORROW :D
i'm going to look over my notes now zzzz
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7a is easy for those in the know, is this correct?
Dilation 0.5 in x axis
Dilation 3 in y axis
Relection in y axis
Translation 3 units 'right'
?
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7a is easy for those in the know, is this correct?
Dilation 0.5 in x axis
Dilation 3 in y axis
Relection in y axis
Translation 3 units 'right'
Yes that is correct
?
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7a is easy for those in the know, is this correct?
Dilation 0.5 in x axis
Dilation 3 in y axis
Relection in y axis
Translation 3 units 'right'
Yes that is correct
?
Dilation 0.5 in y axis
Dilation 3 in x axis
Relection in y axis
Translation 3 units 'right'
cool test though
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7a is easy for those in the know, is this correct?
Dilation 0.5 in x axis
Dilation 3 in y axis
Relection in y axis
Translation 3 units 'right'
Yes that is correct
?
Dilation 0.5 in y axis
Dilation 3 in x axis
Relection in y axis
Translation 3 units 'right'
cool test though
I'm pretty sure it's dilation of factor 1/2 from y-axis (changing x-values) and dilation of factor 3 from x-axis (changing y values)
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You appear to be correct... transformations is my biggest downfall. I'd have a better chance of solving the Riemann Hypothesis that getting this shit.
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how do you get the first q, omgg im forgetting everything
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Since everyone was asking for solutions.
BUT i couldnt obtain the solutions.
This is what i got as the answers:
1. m>8/5
2. N member of R/+-Root2/9 P member of R
3. (2^3X11)/3^11
4.a) Hybrid function
b) loge(2/3)
c) Forgot >.>
5. (kpi)/2 +- pi/6 k member of Z
6. a)Do on calculator
b) x = 1
7a) Dilation of a factor of 1/2 in the y axis. Dilation of a factor of 3 in the x axis. Reflection in the y axis. Translation of 3 right in the x axis
b) m(-2x+6)^3/2 -3
8. _____
9.a) b)Check on calculator
10) 6cm^2/second
11a) Something really long :|
b) It is the distance traveled between 0 and 2 seconds
c) Find the average value of velocity between 0 and 2
how did you get q 10, just looking at it seems weird because pr of non defective is a 1/3 so it should be 3^10 at the bottom?? maybe im wrong..
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Why do you have some answers as "do on calculator" when it's an exam 1?
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why is this exam so hard :(
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Don't stress, these questions are considered the harder ones and there will be only a few on the actual VCAA exam!
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question 1 is wrong i think, M>5/8
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i concur
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Well exam 1 is over guys LOL
But the do on calculator is that you can check your answer easily on calculator.
+ for the related rates one you can either do it as 2 separate chain rules or one chain rule like
dy/dx = dy/dt X dt/dv X dv/dx
So everything cancels out! Something like this can be on exam 2 :)