mreditor16
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- Joined
- Apr 4, 2014
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- HSC
- 2014
Realise, do you think this year was harder or easier than last year?
Yea question 16 bYeh I swear that was in the exam.
i don't see why that seems shifty :S it said prove it's increasing for (/) between -pi/2 and pi/2So what about using the velocity counterpart differentiation?
Btw I didnt use the method using sin and cos in the test cos I though it was shifty. Damn wrong decision.
i didn't know what to call it i just said 0 </= (insert expression) </= 0 therefore -> 0squeeze law or something
cos didn't see limits till after test. I don't have glasses but didn't see till after test.i don't see why that seems shifty :S it said prove it's increasing for (/) between -pi/2 and pi/2
so differentiate and show > 0 for the given domain. pretty straight forward?
I thought it was a little easier, but that's probably because I'm looking at it from a year on and I took 2013 under HSC conditions.Realise, do you think this year was harder or easier than last year?
most of us are just waiting for Carret's solutions.How did people do today? I didn't find many of the questions particularly interesting, but I think I did well.
Any questions anyone wants to discuss/compare answers for?
okay here are some of my answers. one disclaimer - I did not get time to check answers.
q11 a) I) root 2 cis ( - pi /4) ii) -4 / 5 - 2/5 i
b) pi - 6 all over 2 (pi)^2
e) 216 pi units cubed
Q12. b) ii) pi / 18 , 11pi / 18, 13 pi /18
d) iii) 3 pi - 8 all over 12
Q13 a) 2 (root 3) - 3 all over 6
b) 24 root 3 all over 5
Q14. ii) -3/ 2 plus minus (root 15)/2 i
b) ii) pi /4
c ii) 150 M ln (5) all over F hours
Q16 c) x all over (1 + ln x) + C
again, reiterating these are merely my answers and I didn't have time to check at all
I would say equal difficulty, but that is just me. Besides, I did 2013 past paper as simple worksheet practice - didn't practice 2013 (or any other past paper) in exam conditionsI thought it was a little easier, but that's probably because I'm looking at it from a year on and I took 2013 under HSC conditions.
The answer.anyone wanna take a guess at what the 4 marks are allocated for for the trapezium volume question?
probably thisone for getting the height and other dimensions
one for getting correct area/volume expression
one for getting the correct integral with correct limits
one for evaluating the integral correctly i.e. correct answer
i think the start was harder but end was easier. i feel like the e4 might be a little lower, but the top end will be "sandwiched" together because last q was fairly simpleI thought it was a little easier, but that's probably because I'm looking at it from a year on and I took 2013 under HSC conditions.
I got to agree with that.i think the start was harder but end was easier. i feel like the e4 might be a little lower, but the top end will be "sandwiched" together because last q was fairly simple