Carrotsticks' MX2 HSC 2013 Solutions (1 Viewer)

[HAX0R]

Anyone mind scanning the paper and posting it here?

 

[Menomaths]

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]

Thanks. didn't see it,

 

[ForOneEon]

Well, that means I'm screwed over for 4U. Guess I'll worry about 3U now.

 

[obliviousninja]

yea, theres not really much point discussing results now, better focus on 3u.

 

[Web Addict]

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 and for v, I wrote .

 

[AnimeX]

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 and for v, I wrote .

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].

 

[Web Addict]

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]

Just like you let you had to let

 

[HeroicPandas]

Just like you let you had to let

What if I labelled 'alpha' on the diagram but did not say 'let QPS = alpha'?

 

[RealiseNothing]

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]

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]

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]

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

 

[bangladesh]

How is the curve sketching marked?
Is it 3 for right graph and 0 for anything else?

 

[hayabusaboston]

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]

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]

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

 

[Makematics]

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?

Depends, how exactly did you stuff them up? If they are not between the right x coordinatess then probs one mark off

 

[Makematics]

Concensus is that you can, since it's a 1marker (I wrote by symmetry just in case).

Hmm alright, i tried working it out just then for fun, and i think you have to construct another 2 lines and do some other stuff just to find CE. So saying 'similarly' should be fine phew... Was gonna leave it blank because i thought they wouldnt accept 'similarly'