General Thoughts: Mathematics Extension 2 (2 Viewers)

[Poad]

Re: What did you think?

For the mechanics question about what does 'b' represent, I put water resistance.

And meh, I didn't have much time to actually *think* about that probability question. I got 3:1:1 for that ratio.

 

[fozzster22]

Re: What did you think?

For the mechanics question about what does 'b' represent, I put water resistance.

And meh, I didn't have much time to actually *think* about that probability question. I got 3:1:1 for that ratio.

i tihnk i did the probability question and i got stuff in the ratio of (forget the exact numbers ) but it was in the form of ninths.. like 1/9:2/9:4/9 .. ?? anyone else get something like that?

 

[ronnknee]

Re: What did you think?

Actually I think velocity of the current is the correct answer now =\

 

[I-Love-Jesus]

Re: What did you think?

1:1:1
I'm pretty sure.

 

[cccclaire]

Re: What did you think?

Actually I think velocity of the current is the correct answer now =\

I think its either water resistance or the velocity of the current.

 

[cookiemonsterz]

Re: What did you think?

i didnt do the ratio for the probabilities.
did you have to find the limiting sum as n-> infinity for the aswers in i)-iii). seemed like too much effot for one mark.
hopeing 60% zzz. went too slowly..

 

[ab4567]

Re: What did you think?

did anyone have trouble with 8 b) i) ?

i couldnt remove a delta from the answer

i think delta was a constant...not sure though...

 

[bazza159]

Re: What did you think?

i tihnk i did the probability question and i got stuff in the ratio of (forget the exact numbers ) but it was in the form of ninths.. like 1/9:2/9:4/9 .. ?? anyone else get something like that?

yeh my ratio was 1:1:9, i had some ninths in there somewhere..

 

[bazza159]

Re: What did you think?

i didnt do the ratio for the probabilities.
did you have to find the limiting sum as n-> infinity for the aswers in i)-iii). seemed like too much effot for one mark.
hopeing 60% zzz. went too slowly..

yeh thats what i did and yeh it was lotsa work haha, probably not the right method

 

[cccclaire]

Re: What did you think?

Could someone who was allowed to keep the paper scan it and post it up?

It would be muchly appreciated.

 

[miche11e]

Re: What did you think?

i actually thought the paper was pretty good - the other girls who did it thought it was pretty hard though... maybe cause i peracticed heaps of harder 3u and there was heaps?
i thought the intergation was a little bit difficult, but i got them all (i think).
the paper did feel different as other people said, but i dont think it was that bad...
i finished half an hour early and got to go back over it and probably scored another 10 marks because of it, then i got bored and waited till the end...

i really wasnt expecting to feel this good about it, especially cos everyone else thought it was pretty hard, but maybe im just being optimistic? who knows.

 

[namburger]

Re: What did you think?

Actually I think velocity of the current is the correct answer now =\

Its terminal velocity, sub t = infinite

DW i put resistance as well

Anyway, be over delighted with a raw of 100

 

[nsanchez01]

Re: What did you think?

exactly what i said as soon as i finished the exam... hardest i've seen since the 90s. it was pretty awful... i prob did half of 8 and half of 7.... it was a massive time issue tooo! i realised i had an hour left to do 6-8 i was like AAHHHHH!

 

[nsanchez01]

Re: What did you think?

Could someone who was allowed to keep the paper scan it and post it up?

It would be muchly appreciated.

yeahhhh does anyone have the paper pls?

 

[gcchick]

Re: What did you think?

I was so glad there weren't any inequalities in it (Harder 3 Unit). My teacher didn't even show us how to do it.

 

[Kearnzo]

Re: What did you think?

It was different, lots of 3u, and very little mechanics.

I put b as the maximum velocity, so yeh probably speed of the current aswell.

Delta was not a constant. I realised after i walked out that you need to sub in delta = pi/2n or something like that, I think.

 

[18836165]

Re: What did you think?

Can someone tell me what they got for the probability questions, i probably f'ed it up.

 

[mick135]

Re: What did you think?

Freaking hell is it just me or was that test harder than the past hsc's?!?!?!?!?

agreed
yr 12 - 2008...
we may be really really cool - but the bastards set the hardest ext 2 paper in a long while haha

there were so many things missing which sucked
where was the simple conics question just asking
"draw this stating the asymptotes/directicies, foci and x-intercepts"?
the conics questions they gave were harsh

i did the probabilities

it looked something like this for memory
3 balls same:
(n/3n) x (n-1)/(3n-1) x (n-2)/(3n-2)

3 different:
(n/3n) x (n/3n-1) x (n/3n-2)

the last bit i didnt get and made up - which inturn affected the bit after that
(if i'm wrong... i dont care , but i'm pretty sure thats right)

i'm gonna buy next yrs "past hsc papers" cause it has to acknowledge the ppl who made it - then i will hunt them down and make them pay - WHO's WITH ME?! haha

 

[baller4life]

Re: What did you think?

it will be interesting to see if the board is setting a trend followed by the ext 1 exam on wednesday

 

[tacogym27101990]

Re: What did you think?

Can someone tell me what they got for the probability questions, i probably f'ed it up.

i dunno if im right but for
i) (n^2-3n+1)/(9n^2-9n+2)
ii)(2n^2)/(9n^2-9n+2)
ii)(2n^2-n)/(9n^2-9n+2)

iv)1/9:2/9:2/9 = 4/9

probably wrong.

i hated that test