Maths Paper II (HL) - How was it?

Dmullar

Piste wrote: »

God I hate maths.

For the C part of the circle question I got an answer. Not the right answer you have to understand, because no answer could be as ridiculous as mine. Fractions all over the gaff.

I got H in a quadratic on its own, then ended up with complex roots! Kinda gave up then....:(

Thought the paper was a lot harder than paper 1, was hoping for an A but really really doubt it now.


Oh, and that vectors question was class.

arthistory

Fince wrote: »

i got the same as you in 1bi.
unit vector i said was over 5, not root5
got completey differnt for 3bii
think your tana/2 is right
Q5, 180 was an option as well

Thanks...probably will lose 3 marks for no 180

xOxSinéadxOx

I did ****!!! paper 2 isn't my best anyway but I found it very difficult, couldn't do loads of the (b) parts :eek: could only do the (a) part on Q8 and a bit of the (b) couldn't do the max/min volume at all. the circle, couldn't do part of (b) or (c). vectors. couldn't do the (b) part AT ALL. The line, think I got the whole question out. Trig couldn't do the (b) part of the first trig. couldn't do the (c) part or some of the (b) part on the second trig. I was planning on doing probabilty launched into got all confused and ****ed up, started to panic, made loads of mistakes so went off and did the trig instead

****E.

aine-maire

did anyone else do further prob?

it was all going really well...................

and then c)ii

I got something like 20,I think....:o

SugoiHito

arthistory wrote: »

Thanks...probably will lose 3 marks for no 180

I dont think you will cos 180 isnt part of the answer....cosx is equal to -1 in 180 and it was supposed to be 1 so your ok!!

sock puppet

SugoiHito wrote: »

I dont think you will cos 180 isnt part of the answer....cosx is equal to -1 in 180 and it was supposed to be 1 so your ok!!

I got 0, 90, 270 and 360. But I always get the unit circle wrong so I'm not sure if it's right.

Fince

SugoiHito wrote: »

I dont think you will cos 180 isnt part of the answer....cosx is equal to -1 in 180 and it was supposed to be 1 so your ok!!

what a stupid mistake!! just remembered that i didn't +c the integration by parts as well.

.:FuZion:.

I just realised that I wrote down 2(6)^1/2 instead of 4(6)^1/2 for the trig with the cheese! Everything perfect until that! :mad: How many marks will I lose for it?

Fince

sock puppet wrote: »

I got 0, 90, 270 and 360. But I always get the unit circle wrong so I'm not sure if it's right.

it was 0 less than or equal x less than or equal to 180

SugoiHito

Fince wrote: »

what a stupid mistake!! just remembered that i didn't +c the integration by parts as well.

Haha i forgot the +c too....dammit...the more i look at it the more mistakes i see!!

Swaine55

What was the answer for the cheese Q.
I think i got ither 3(root8) or 8(root3)

.:FuZion:.

Swaine55 wrote: »

What was the answer for the cheese Q.
I think i got ither 3(root8) or 8(root3)

4(root6) but stupid me not paying attention to my calculator wrote down 2(root6).

sock puppet

Fince wrote: »

it was 0 less than or equal x less than or equal to 180

Crap. I read 360. Should have checked.

Pygmalion

Not as good as Paper 1, I was still writing at the end so I didn't have time to look over what I'd done, I know I finished 3 questions (though didn't necessarily get them all right) and on each of other questions there was something that didn't really work out.

For 8(b) me and 2 others in my class got the same answer, but got 233 for the approximate value of sqrt(17), so not really sure what the hell happened there.

If f(x) = sqrt(1+x) then surely to get an approximate value for sqrt(17) you let x = 16?

SugoiHito

Pygmalion wrote: »

Not as good as Paper 1, I was still writing at the end so I didn't have time to look over what I'd done, I know I finished 3 questions (though didn't necessarily get them all right) and on each of other questions there was something that didn't really work out.

For 8(b) me and 2 others in my class got the same answer, but got 233 for the approximate value of sqrt(17), so not really sure what the hell happened there.

If f(x) = sqrt(1+x) then surely to get an approximate value for sqrt(17) you let x = 16?

Nah cos it said x is bigger then -1 but less then 1

aine-maire

Pygmalion wrote: »

If f(x) = sqrt(1+x) then surely to get an approximate value for sqrt(17) you let x = 16?

No, -1<x>1.......I made the same mistake, did the whole question in the last 10 minutes

Fince

Pygmalion wrote: »

Not as good as Paper 1, I was still writing at the end so I didn't have time to look over what I'd done, I know I finished 3 questions (though didn't necessarily get them all right) and on each of other questions there was something that didn't really work out.

For 8(b) me and 2 others in my class got the same answer, but got 233 for the approximate value of sqrt(17), so not really sure what the hell happened there.

If f(x) = sqrt(1+x) then surely to get an approximate value for sqrt(17) you let x = 16?

it said that -1<x<1. it'll be sqrt(1+16).... sqrt(16(1/16+1)........ 4sqrt(1+1/16)

x=1/16 and u multiply your answer by 4 at end

.:FuZion:.

Fince wrote: »

it said that -1<x<1. it'll be sqrt(1+16).... sqrt(16(1/16+1)........ 4sqrt(1+1/16)

x=1/16 and u multiply your answer by 4 at end

I couldnt remember how to do that method and I had only looked at it last night. :rolleyes: So me and the whole class ( or most ) ended up getting 233 lol.

Pixiesticks

oh god. I hope was hopin for an A1 in maths but that was a terrible paper =(

• I got completely bogged down in the circle question part c...wasted way too long on it
• 2 was lovely
• 3...ugh. forgot how to prove f(L) was a line. got m=1,0???
• 4 was grand
• 5...I got 8.00006 for part c...so i rounded it off to 8 and left it. ???
• 7...(i know extra question. I didn't realise how much i'd done. honours maths and can't count...) for c I got root [(2sd1^2+3sd2^2)/5]
• 8...took so long to cop that part b i only just got it down in time. and part c...I got lik 4piea^3/root 3???

disaster...:mad:

KokaNoodles

Anyone thought it was much easier than paper1? Dunno why but i usually prefer paper 1.

SugoiHito

I think these are the answers for Q6 c part
(i)1/10
(ii)9/20
(iii)3/20

Rob!

SugoiHito wrote: »

I think these are the answers for Q6 c part
(i)1/9
(ii)4/9
(iii)5/27

Completely different from mine!

I got:

6c(i) 1/10
(ii) 9/20
(iii) 1/10

Pygmalion

SugoiHito wrote: »

I think these are the answers for Q6 c part
(i)1/9
(ii)4/9
(iii)5/27

I got:
(i) 1/10
(ii) 9/20
(iii) I think 3/20

NerdPantzz

horrible. had a little cry durring the exam... quietly though, as not to disturb anyone else. There weren't six questions I felt comfortable answering. The line and circle went well, I worked hard at them but it was down hill from there. Found question 7 very hard. Hope my paper1 result will bring me to a pass or its bye bye college for me!

Antamojo

I'm hoping I scraped a pass overall.
Did ok, not brilliant.

Claypigeon

NerdPantzz wrote: »

horrible. had a little cry durring the exam... quietly though, as not to disturb anyone else. There weren't six questions I felt comfortable answering. The line and circle went well, I worked hard at them but it was down hill from there. Found question 7 very hard. Hope my paper1 result will bring me to a pass or its bye bye college for me!

:rolleyes: Crying? What course are you gunning for? All of your courses require math?

DáireM

Pygmalion wrote: »

I got:
(i) 1/10
(ii) 9/20
(iii) I think 3/20

Me too. HIGH FIVE

~Candy~

did any1 use the tan2a formula to get the tan A/2 thingy

galway.gaa

~Candy~ wrote: »

did any1 use the tan2a formula to get the tan A/2 thingy

no i drew a right angled tringle cos we already had cos15/17. i think i got 4/15 or something like that

Dmullar

~Candy~ wrote: »

did any1 use the tan2a formula to get the tan A/2 thingy

Yep. Really can't remember what answer I got though.