Maths Extension 2 thoughts (2 Viewers)

[snail489]

lol x^2n isnt a constant?

What you're saying is like "




....

idk what ur on about but

eyy hoes you gotta remember the leading coefficient wasnt 1 rip

this is what i meant (soz i just explain things badly lol)

e.g. you can expand the second term in the part (ii) expression and you get -(2nC2) x^(2n-2+2) or some shit
so the leading coefficient isn't 1, but rather some disgustingly huge expression

 

[Zen2613]

I think the answer was D or something

I used the sum of arithmetic progression from 1 to 101 and got one of the answers

I also think I got C. Well I know I put down 5151, because the sum of integers from 1 to 100 is 5050 (thanks Gauss!!) so add 101 and you get 5151 which i think was C

 

[InteGrand]

I thought the only time someone got 100 raw in the HSC 4U paper was in 1993 (Anthony Henderson). People usually lose a mark or two from silly mistakes or something.

 

[leehuan]

That one was the sum of the first one hundred and one integers so yes C - 5151

 

[Drsoccerball]

I got 900 seconds for the question where the baloon pops ?

 

[Physicklad]

i got 3600 bro

 

[coz707]

I got 3600 seconds

 

[Physicklad]

I got 3600 seconds

yea high five lad

 

[snail489]

I got 900 seconds for the question where the baloon pops ?

was 3600 i think

 

[Drsoccerball]

fmd...

 

[leehuan]

It was 1 hour. (i.e. 3600s)

 

[Drsoccerball]

Well good bye state rank now lets see if I can still get a band 6...

 

[Ekman]

Geez so many people on this thread right now lol

 

[Physicklad]

dudes anyone get screwed over by the banked race car question?

 

[leehuan]

Lol yep screw the state rank, I'm on -4 now.

 

[Zen2613]

idk what ur on about but



this is what i meant (soz i just explain things badly lol
e.g. you can expand the second term in the part (ii) expression and you get -(2nC2) x^(2n-2+2) or some shit
so the leading coefficient isn't 1, but rather some disgustingly huge expression

Ah yes you are right lol, 1 mark less

 

[leehuan]

dudes anyone get screwed over by the banked race car question?

0<theta<pi/2 -> tantheta>0

So 2/(1-tantheta) > 2

I used that to force out the inequality.

 

[Drsoccerball]

Lol yep screw the state rank, I'm on -4 now.

-6 :{

 

[Vizsla]

Estimated scaled mark for 80-85 raw?

 

[prettyunpretty]

Hey guys,
Does anyone remember every question vaguely and the number of marks for each question? I want to check if I didn't accidentally skip a question.