Maths HL Paper 2

Killio9

blacklionboy wrote: »

I got x^2+y^2= 20 but im sure its wrong!

same as...did you fill(-g,-f) into the tangeant? thats what i did...knew it was wrong didnt have any time to do it again!

johndoe91

JerCotter7 wrote: »

That's the right answer. r=2c means they are on the same line.

sorry but just think about it for a second....in the question for part one we are taking CB to be OA and thus Q is c + 1/2 a..... but tho CB is A they aren't on the same line so r=2c doesnt mean its on the same line!

EuropeanSon

UglyFuc wrote: »

What d hell is project maths can i ask?

The new course that is replacing the current maths course in a few years.

zoom!

was doing really well but for some stupid reason took too much time and only had 5 mins for q8. Other than that I did quite well. Along with a pretty good paper 1 aswell I definetly got the honour and maybe with a bit of luck a B3

Reillyman

EuropeanSon wrote: »

That's a mess, and completely wrong, despite the correct answer. There are 6! ways for the 2nd bit, and 6.6! for the first.

Excuse me?

Although your method is 100% correct, as is mine, there's no need to multiply by the 6! as order does not matter in this question.

UglyFuc

anyone hear what your maths man said on 2fm there? about how it was. just missed it..

blacklionboy

Killio9 wrote: »

same as...did you fill(-g,-f) into the tangeant? thats what i did...knew it was wrong didnt have any time to do it again!

yeah i did. but it makes sense cause centre is on it..

tracker-man

Anyone get the area of the Rectangle in Q8!?

Caron

straight_As wrote: »

Leaving cert maths has gone to the shitter.

That paper doesn't compare to the early 2000's.

shut up u ******. u try doin the leaving cert again!

EuropeanSon

Reillyman wrote: »

Excuse me?

Although your method is 100% correct, as is mine, there's no need to multiply by the 6! as order does not matter in this question.

You said the number of possible outcomes was 1. It wasn't. It was 6!. Therefore, regardless of how you care to phrase it, or what you arbitrarily decide "matters", what you stated was wrong.

Caron

Crow92 wrote: »

calm down there will ya, no need to curse =/

i didn curse actually but they stil bleeped it out.

EuropeanSon

tracker-man wrote: »

Anyone get the area of the Rectangle in Q8!?

12rt3.

mahonykid

blacklionboy wrote: »

yeah i did. but it makes sense cause centre is on it..

the centre wasnt on that line it was on a line perpendiular to that line:)

blacklionboy

mahonykid wrote: »

the centre wasnt on that line it was on a line perpendiular to that line:)

yeah i did use the perpendicular one

mahonykid

EuropeanSon wrote: »

12rt3.

awh man i got 36

mahonykid

blacklionboy wrote: »

yeah i did use the perpendicular one

sorry i thought u meant the tangent

MavisDavis

It wasn't hideous, but where were the proofs?! I spent ages learning them for paper one and two and the only one I didn't learn was there. Damn you difference equation!

muffinz

Holy crap I thought i was going to die of happiness when i saw the exam!! The circle and the line have always been my worst questions, i can usually never even do the part As, but i got them done, i was so freakin happy the option was pretty hard, that sin^2 x killed me trying to get out and i didnt get it right, but god bless attempt marks

i hoping i got a c1 in it

JerCotter7

johndoe91 wrote: »

sorry but just think about it for a second....in the question for part one we are taking CB to be OA and thus Q is c + 1/2 a..... but tho CB is A they aren't on the same line so r=2c doesnt mean its on the same line!

CB isn't A.

Reillyman

tracker-man wrote: »

Anyone get the area of the Rectangle in Q8!?

I got [latex] 12\sqrt3 cm^2 [/latex]

Making It Bad

Reillyman wrote: »

I got [latex] 12\sqrt3 cm^2 [/latex]

I believe I got the same

blacklionboy

same!331/1440 for end of 8c!

muffinz

roll on summer 10! wrote: »

woo!! go vectors! never have to do maths again in our lives!! unless you choose to that is! :P

man i love vectors! but what did you get for the 2 values of k? did you get whole numbers? i got 2 tooootally terrible, wrong answers

muffinz

JerCotter7 wrote: »

CB isn't A.

cb = oa wasnt it?

annainez

I thought paper 1 was waaayy nicer than paper 2, trig and Q8 were disgusting! But then again, Maths is DEFINITELY not my strength. Just want enough points so that it was worth doing higher level. Thought the vector question was nice enough, but I didn't get values for k in part b I don't think, I mean I know it was really simple but for some reason it was not working for me!

Paper 1-wise... did anyone else think the Algebra and the integration were ridiculously easy? I'm worrying we're gonna have a serious b*tch of a marking scheme now... eek!!!

mahonykid

muffinz wrote: »

man i love vectors! but what did you get for the 2 values of k? did you get whole numbers? i got 2 tooootally terrible, wrong answers

i got k=1 or k= 7 prop wrong dow but i went through the right method:p

muffinz

wonderfulname wrote: »

Lovely paper!

hmm i think i got +/-1..

did anyone do question 9?

i got 20 too, itg was k^2 = 400 or something like that

EuropeanSon

blacklionboy wrote: »

same!331/1440 for end of 8c!

Correct.

JerCotter7

muffinz wrote: »

cb = oa wasnt it?

Oh yea I got mixed up there sorry. Yes CB is = OA.

And OR = 2OC which is written as R = 2C. Has to be from the origin so it is right.

annainez

EuropeanSon wrote: »

12rt3.

HALLELUJAH!!!