# Carrotsticks' MX2 HSC 2013 Solutions (1 Viewer)

#### HAX0R

##### Member
Anyone mind scanning the paper and posting it here?

#### tywebb

##### dangerman
Does Terry Lee put up 2U solutions or does no one care about 2U?
Nope. Terry Lee only does Ext. 1 and 2

But you can find general, 2 unit, ext. 1 and 2 at itute.com.

Unlike Carrotsticks and Terry Lee, itute take their time getting solutions up. Maybe in a few weeks.

The Board of Studies will also publish solutions - but much later. Maybe even next year!

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#### Menomaths

##### Exaı̸̸̸̸̸̸̸̸lted Member
Nope. Terry Lee only does Ext. 1 and 2

But you can find general, 2 unit, ext. 1 and 2 at itute.com.

Unlike Carrotsticks and Terry Lee, itute take their time getting solutions up. Maybe in a few weeks.

The Board of Studies will also publish solutions - but much later. Maybe even next year!
Ah...

#### HAX0R

##### Member
Thanks. didn't see it,

#### obliviousninja

##### (╯°□°）╯━︵ ┻━┻ - - - -
yea, theres not really much point discussing results now, better focus on 3u.

##### Member
Just wondering, for Question 16b, if I resolve the forces for iv and v, would I be able to get 1 mark each? For iv, I just wrote $\bg_white TsinB-TcosB=mg$ and for v, I wrote $\bg_white TsinB+TcosB=mw^2r$.

#### AnimeX

##### Member
Just wondering, for Question 16b, if I resolve the forces for iv and v, would I be able to get 1 mark each? For iv, I just wrote $\bg_white TsinB-TcosB=mg$ and for v, I wrote $\bg_white TsinB+TcosB=mw^2r$.
I wrote this aswell, but because S'PS is not 90 you cannot say CosB, you need to say sin <QPS (confirmed by Carrot). Hopefully they'll be nice to us and award us a mark but it's doubtful [since incorrect].

##### Member
I wrote this aswell, but because S'PS is not 90 you cannot say CosB, you need to say sin <QPS (confirmed by Carrot). Hopefully they'll be nice to us and award us a mark but it's doubtful [since incorrect].
Crap. I didn't realise that because I forgot that P lies on an ellipse, not a circle.

#### RealiseNothing

##### what is that?It is Cowpea
Just like you let $\bg_white QPS' = \beta$ you had to let $\bg_white QPS = \alpha$

#### HeroicPandas

##### Heroic!
Just like you let $\bg_white QPS' = \beta$ you had to let $\bg_white QPS = \alpha$
What if I labelled 'alpha' on the diagram but did not say 'let QPS = alpha'?

#### RealiseNothing

##### what is that?It is Cowpea
What if I labelled 'alpha' on the diagram but did not say 'let QPS = alpha'?
Diagram in your answer booklet right? Could be ok I guess, surely they'd work it out.

#### HeroicPandas

##### Heroic!
Diagram in your answer booklet right? Could be ok I guess, surely they'd work it out.
Phew! lol (yeh diagram in my answer booklet)

#### hayabusaboston

##### Well-Known Member
Here are the solutions to this year's MX2 paper!

https://www.dropbox.com/s/ao9yfa5reav9gq7/HSC 2013 Solutions.pdf?m

A huge thank you to all who pointed out any computational errors!

Will I get anything for the e^x volumes question if I did exactly what u did, BUT I replaced the 4-x with 3-x? I would think since I got so close to the answer and obviously knew what I was doing, even if I messed up 1 number, I should at least get 1/4 right?

#### Makematics

##### Well-Known Member
Will I get anything for the e^x volumes question if I did exactly what u did, BUT I replaced the 4-x with 3-x? I would think since I got so close to the answer and obviously knew what I was doing, even if I messed up 1 number, I should at least get 1/4 right?
thatd probs be 3/4 wouldnt it? carried on errors... as long as you did an ibp

##### Well-Known Member
How is the curve sketching marked?
Is it 3 for right graph and 0 for anything else?

#### hayabusaboston

##### Well-Known Member
thatd probs be 3/4 wouldnt it? carried on errors... as long as you did an ibp
fuck YEAAA
wait whats an IBP?

I cant remember my final result, it was almost exactly like carrot's, only an extra e^2 and 2 e^3's or something.

#### hayabusaboston

##### Well-Known Member
How is the curve sketching marked?
Is it 3 for right graph and 0 for anything else?
O yea, also with curve sketching, I slightly messed up x intercepts of 2nd graph, but shape is identical, as well as clearly distinguishable y intercept rather than (0,0), what would I get for it? 2/3 or 3/3?

#### RealiseNothing

##### what is that?It is Cowpea
O yea, also with curve sketching, I slightly messed up x intercepts of 2nd graph, but shape is identical, as well as clearly distinguishable y intercept rather than (0,0), what would I get for it? 2/3 or 3/3?
>slightly messed up
>will I get 3/3

what do you think