Carrotsticks' Solutions 2015 Extension 2 HSC (1 Viewer)

obliviousninja

(╯°□°）╯━︵ ┻━┻ - - - -
looks like i state ranked

Librah

for 16aiii shouldn't it be b(n)= (nq q)=(nq)!/(nq-q)!q!

WhoStanLeee

Member
Sorry my copy is missing Q11 and Q15 b) and c)

tywebb

dangerman
Sorry my copy is missing Q11 and Q15 b) and c)
Indeed it is.

Here are Q11 and Q15 b and c which I extracted from beanbean's version:

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Drsoccerball

Well-Known Member
lel i integrated one side of the square....Cylindric shell I made a mistake...Baloon question made a mistake....Pn i lost both marks... (-1)^n lost 1 mark and last question lost 2 marks... sucks

Carrotsticks

Retired
for 16aiii shouldn't it be b(n)= (nq q)=(nq)!/(nq-q)!q!
Cheers, fixed it.

WhoStanLeee

Member
Unfortunately Carrotsticks will lose marks for not drawing all complex numbers on the same half-page Argand diagram.

Carrotsticks

Retired
Unfortunately Carrotsticks will lose marks for not drawing all complex numbers on the same half-page Argand diagram.
Good grief I did not see that. Will change that now.

obliviousninja

(╯°□°）╯━︵ ┻━┻ - - - -
Unfortunately Carrotsticks will lose marks for not drawing all complex numbers on the same half-page Argand diagram.
LOL

camdaman12

Member
lel i integrated one side of the square....Cylindric shell I made a mistake...Baloon question made a mistake....Pn i lost both marks... (-1)^n lost 1 mark and last question lost 2 marks... sucks
omfg i integrated one side of the square too LOL I THOUGHT I WAS THE ONLY ONE IN THE STATE WHO COULD BE SO STUPID

atargainz

Active Member
omfg i integrated one side of the square too lol i thought i was the only one in the state who could be so stupid
FUCK ME TOO THE CYLINDER ONE. That actually made the integration harder, hoping for 3/2 marks

babyoats

New Member
Shouldn't 8 be b?

helloimyellow

Active Member
feels when you get question 1 in MC wrong

RIP ME

Carrotsticks

Retired
Shouldn't 8 be b?
Yes it should, thank you. I had the right answer in mind but typed it out wrong.

ifireballx

New Member
Isn't 1 + 2nC2 + 2nC4 +...+ 2nC2n = 2^2n-1?

16 b) iii)

Carrotsticks

Retired
Isn't 1 + 2nC2 + 2nC4 +...+ 2nC2n = 2^2n-1?

16 b) iii)
Yes it is, thank you. Force of habit (as the power is usually just n).

drnobody901

New Member
What do you think a raw mark of 82% will scale to

helloimyellow

Active Member
What do you think a raw mark of 82% will scale to
^ I would like to know this too considering that's about where I'm at.