• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

General Thoughts: Mathematics Ext 1 (1 Viewer)

biopia

WestSyd-UNSW3x/week
Joined
Nov 12, 2008
Messages
341
Gender
Male
HSC
2009
dh/dt = -k

right?

and 5. b) iv) was 100 days, right
That's what I got...
Honestly though, when I did it, and I saw that the times were exactly the same from 3-2 and 2-1, I doubted whether it was correct... There was no time to re-attempt it lol.

You're pretty awesome on the 4U forum here, so maybe this consensus means we got it correct?
Hope so =]
 

The Nomad

Member
Joined
Oct 11, 2009
Messages
123
Gender
Male
HSC
2010
dh/dt = -k

right?

and 5. b) iv) was 100 days, right
Yes, exactly what I got. And to the person above me, the result makes sense because h and t are related by a linear function, so the function has a constant gradient throughout, which means equal time intervals result in equal change of height/depth.
 
Last edited:

trafficjam

New Member
Joined
Sep 1, 2009
Messages
13
Gender
Male
HSC
2009
i thought the test was easier than some of the last papers..


did anyone use implicit differentiation for the 7)b)ii? when we were asked to differentiate theta?
 

q3thefish

Member
Joined
Sep 23, 2008
Messages
669
Gender
Undisclosed
HSC
2009
dh/dt = -k

right?

and 5. b) iv) was 100 days, right
That's what I got bro.

Man.. that paper was harder than previous years T_T

Did not get the last 4 marks from Q7 and could not complete various things from other questions.

ARG at the binomial Q6 >_>

Lost at least 15 marks so far.

E4 out of reach?
 

untouchablecuz

Active Member
Joined
Mar 25, 2008
Messages
1,693
Gender
Male
HSC
2009
That's what I got...
Honestly though, when I did it, and I saw that the times were exactly the same from 3-2 and 2-1, I doubted whether it was correct... There was no time to re-attempt it lol.

You're pretty awesome on the 4U forum here, so maybe this consensus means we got it correct?
Hope so =]
i think by inspection 100 days is correct, because dh/dt is constant .'. h varies with respect to t at a constant rate, so it makes sense that between two equal intervals its the same
 

untouchablecuz

Active Member
Joined
Mar 25, 2008
Messages
1,693
Gender
Male
HSC
2009
That's what I got bro.

Man.. that paper was harder than previous years T_T

Did not get the last 4 marks from Q7 and could not complete various things from other questions.

ARG at the binomial Q6 >_>

Lost at least 15 marks so far.

E4 out of reach?
nah brother

easy 94 aligned if u get 65/84
 

Enigmanation

Member
Joined
Jan 25, 2009
Messages
47
Gender
Male
HSC
2009
Paper was pretty straightforward, apart from binomial part of q6 which fucked me in the balls hard. Fair paper all in all though.
 

M@ster P

Member
Joined
Feb 9, 2008
Messages
619
Gender
Male
HSC
2009
1. 12/12
2. 12/12
3. 10-11/12
4. 11/12
5. 7-8/12
6. 4-6/12
7. 2-3/12

minus 5 silly mistakes

Total: 53 - 64/84

lol as you can see question 6 and 7 owned me, bit disaapointed with question 5 did some silly mistakes which i just realised after the exam.

pretty happy overall, if im lucky a band e4, but high band e3 is ok
 

kryptunite

New Member
Joined
Dec 20, 2007
Messages
5
Gender
Male
HSC
2009
q7 ...=[......wasted time copying the diagram and drawing nice and uniform bricks and didint even end up working anything out. AND NO MARK FOR DIAGRAM =[ ....but i completed the paper without time to recheck. gay
 

smelnizzle

Member
Joined
Jun 13, 2009
Messages
69
Location
Sydney
Gender
Female
HSC
2009
Uni Grad
2013
definitely a fair test.
e4 would be mad.
but i would be satisfied with e3.
(PLS E4) :p
 

KokoNut

Member
Joined
Mar 15, 2009
Messages
43
Location
everywhere
Gender
Female
HSC
2009
this paper is better than the 4u one, which i did very crap
i used first hour to do Q1-Q5...
and then Q6 and Q7 took me about 50mins, HOWEVER i still could not work out most of the questions!
 

Jacob1991

Member
Joined
Oct 4, 2008
Messages
108
Gender
Male
HSC
2009
i know all the top 5 guys in my school got everything :)
sooooo happy
 

Sarah92

Member
Joined
Apr 8, 2008
Messages
52
Location
Newcastle
Gender
Female
HSC
2009
Uni Grad
2012
Q1-4 was fine.
Q5, 6 and 7 not good at all.
I guess i should have dropped extension.
 

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

Top