• Best of luck to the class of 2024 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page
MedVision ad

Section I: Multiple Choice (1 Viewer)

mreditor16

Well-Known Member
Joined
Apr 4, 2014
Messages
3,169
Gender
Male
HSC
2014
top 5 at my school told me 9 was A - I guessed it cos of time, so idk.
 

iStudent

Well-Known Member
Joined
Mar 9, 2013
Messages
1,158
Gender
Male
HSC
2014
I got 10 as A o_O
break it up then use u=-x to get A instantly
 

wagig

Member
Joined
Jan 29, 2013
Messages
152
Gender
Male
HSC
2015
Ohhhh, for 9, v is in terms of x, so you can't find acceleration by doing dv/dt
 

iStudent

Well-Known Member
Joined
Mar 9, 2013
Messages
1,158
Gender
Male
HSC
2014
Oh actually never mind. The answer I was looking for isn't there :(
Makes sense now ahha. Yea D looks right
 

IR

Active Member
Joined
Oct 15, 2014
Messages
255
Gender
Male
HSC
2014
Here's what I got:
1. D
2. A
3. B
4. C
5. C
6. B (answer was D -.-)
7. A
8. B
9. B
10. D

Definitely got a few wrong, was worried about time
Isnt 7) B
fcking 8. So simple, misread the options and wrote A. Fcking 10, i got wring.
 

IR

Active Member
Joined
Oct 15, 2014
Messages
255
Gender
Male
HSC
2014
pree sure 10 is D :)
Fcking hell. WTF, I though B said f(x)+ F(a-x).
But not sad to lose those two marks, because they were pree careless. But still a bit said- fcking why am I blind- Can someone tell me?
 

mirachael

Active Member
Joined
Dec 30, 2013
Messages
115
Gender
Male
HSC
2014
DABCCDBBBD
Pretty sure they're all right except for 9 which should be A (silly me-gg first in state)
For D, I let F(x) be the primitive and worked from there
 

danielblarg

New Member
Joined
Oct 24, 2013
Messages
5
Gender
Male
HSC
2014
For 9, differentiating (A) I got dv/dx = 2cos(x-1), a = v.dv/dx = 2v.cos(x-1), sub x=1, v=2, a = 2(2).cos(0)=4
 

dan964

what
Joined
Jun 3, 2014
Messages
3,479
Location
South of here
Gender
Male
HSC
2014
Uni Grad
2019
Yep, affirmed. Same answers except...
For Q10, let the primitive of f(x) be S(x). A only works for even (unfortunately I put that answer)...
D IS Q10 as above.

I will put questions up scanned by 5pm, with solutions maybe...

Multiple Choice
D, A, B, C, C, D, B, B, A, D

Tricks and Blunders:
(not mine)

Q11 b - make sure not to forget the 1/pi, or get the sign wrong.
Q11 e - integrate wrt y not x
Q12 a - label your axes, remember for (ii) if f(a)=0 then f(1/a) is undefined.
Q12d (ii) - evaluate the left hand side rather than trying to get a reduction formula.
Q13 b - find the height by splitting the trapezium into a parallelogram and equilateral triangle
Q13 c (iv) - let t=e, then find the slope of MS
Q14 a ii - don't do what I did which was long division, still get the same answer just takes longer
Q14 b i - angle between two lines, make sure to justify why a^2 - b^2 not b^2 - a^2
Q14 c i - at terminal velocity, a = 0
Q15 b ii - let n = 4x then work out and then simplify down
Q15 c i - find forces horizontally first to eliminate T and r, and then use the forces vertically to get the expression
Q15 c ii - use cos^phi = 1 - sin^phi then quadratic equation
Q15 c iv - use part (i)
Q16 a ii - use the tangents and the straight angles add up to 180, note: you will need to apply a similar method to part (i) again for circle 2
Q16 b i - didn't do, but guessing sum of a G.P.
Q16 b ii - use part (i) and integrate between 1 and 0
Q16 b iii - use part (ii) and let n go to infinity so middle term goes to 0
Q16 c - sub x = e^u, and notice it looks like a quotient rule in reverse...
 
Last edited:

IR

Active Member
Joined
Oct 15, 2014
Messages
255
Gender
Male
HSC
2014
I got 10 as A o_O
break it up then use u=-x to get A instantly
How'd u get A? It just can be A because if f(x) is even then A=0 and if f(x) is odd, then the original question is zero.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top