* Higher level Maths = The Aftermath *

nommm · 13-06-2011 05:53PM

∈of C....(complex)........................D

Way better than the other one. I wouldn't call it 'easy' tho!

FreshTillDeath · 13-06-2011 05:56PM

Paper 2 is my worse of the two papers but i did put a good bit of work into it and generally i'm very happy with it ( Besides Q3 ). Its after making me more optimistic that i didn't fail the whole thing anyway

All questions were accessible and didn't make me cringe!

LilMissCiara · 13-06-2011 05:56PM

∈ of N...(positive).........................B

TimeToShine wrote: »

Easiest paper 2 i've ever seen tbh

I concur..!

I think I have done a near perfect paper.

I am almost certain that Paper 1 and Paper 2 will give me an A2, or at least a B1!

polka dot · 13-06-2011 05:56PM

< 0........(negative).......................C

Happy out with questions 6 and 7! Loved them. Glad I wasn't relying on question 4, I have never seen that circle yoke before in my life. (Though I vaguely remember it being called a concentric circle...? Maybe?) Didn't touch it.

Question 5 was okay, got the proof out. Couldn't get the next part out. Got the c part all out.

Question 1. Good god. Screwed it up so badly that I'd be surprised if I got more than 15 marks (got part a out...)

Vectors was lovely, except for part a. Have a feeling that was some formula or triangle I was meant to know and didn't. My own fault.

Group theory. WHAT the heck was that?!

Goddamn tetrahedron made no sense to me. The A part was like... heaven. But the b part 1 and 2 just no. Also made up part 5. Can't wait to see the solutions for that anyway

madmax92 · 13-06-2011 05:58PM

Ive done like 1 a+b, 2a+b, 3 a+ b1, 4 a(att) + b, 5 a+b+c (att) + 8 a+b and I passed away 1hour before the end! FAIL

LilMissCiara · 13-06-2011 05:58PM

∈ of N...(positive).........................B

polka dot wrote: »

Vectors was lovely, except for part a. Have a feeling that was some formula or triangle I was meant to know and didn't. My own fault.

Nope, multiply it out and let the i parts equal each other and the same for the js. You'll have a simultaneous equation then!

ChloeElla · 13-06-2011 06:00PM

< 0........(negative).......................C

Wow.. I thought it was a nice paper, pretty straightforward, but most girls in my class were complaining majorly about it!

madmax92 · 13-06-2011 06:02PM

ChloeElla wrote: »

Wow.. I thought it was a nice paper, pretty straightforward, but most girls in my class were complaining majorly about it!

As I could never understand vectors, here I done them in 10mins so it was pretty easy. They ballanced 2 papers, so I hope just to pass it.

NotExactly · 13-06-2011 06:06PM

ChloeElla wrote: »

Wow.. I thought it was a nice paper, pretty straightforward, but most girls in my class were complaining majorly about it!

Ara sure, you'll always have that :rolleyes:

kahf1_01 · 13-06-2011 06:07PM

< 0........(negative).......................C

well it was a relieft when I opened the paper and read it. At least it was "normal"

It wasn't too difficult. It was more familiar and common. I did Q 1,2,3,4,5,8

Q1. Part was A was great. B perfect. Part C I couldn't remember, attempt at most.
Q2. Part A was fine, as was B (I hope) C i was easy. though C ii wasn't
Q3. A was fine, I hope it was + instead of - the B part was a nightmare! bar i
Q4. A fine. B I think I got it. C another nightmare!
Q5. Well, I was getting tried at this stage. A was fine. B was impossible. and C was a real project maths question. I couldn't get it in surd form. kinda weird.
Q8. Part A was lovely. B little harder. and C was good.

Overall, paper 1 and 2 combined. I'd LOVE a B, although C looks likely. phew least it's all over, btw I get really tried at the end, my concentration drops off.

electrictrad · 13-06-2011 06:11PM

∈ of N...(positive).........................B

LilMissCiara wrote: »

To prove it I did the thing with the proof slopes of a line but switched it so it was opposite.. :L

Couldn't get 7Cii out.. I used 3 pages and all..! :P

7 cii in 5 lines!. . .Standard Deviation = 1, as the SD from part i cancels out with the upper line

. . .Loved the probability, especially the Pascals Triangle problem. . .

. . .Anyone else get a decimal BD on 5 c ii , and 300root3 for 5c part 1?

River Song · 13-06-2011 06:12PM

I predicted right again

I said last night the tan^-1 pi approximation would be great to come up

Oh my, what a LOVELY paper. I might be on track to get my B again

Eeeep

electrictrad · 13-06-2011 06:13PM

∈ of N...(positive).........................B

Catacomb wrote: »

I turned Tan(A+B) into Tan(A-(-B)) used the "Tan(A-B)" formula for it and then turned all the resulting Tan(-B)'s into -Tan(B)?

:rolleyes: I wonder if that will get marks, it just seemed to easy for my liking?

Unfortunately, probably just the attempt. . .but I could be wrong. . .

you've to let tan(a+b)=sin(a+b)/cos(a+b), expand, and divide up and below by cosacosb. . .at least thats the book proof. . .

LilMissCiara · 13-06-2011 06:13PM

∈ of N...(positive).........................B

electrictrad wrote: »

7 cii in 5 lines!. . .Standard Deviation = 1, as the SD from part i cancels out with the upper line

. . .Loved the probability, especially the Pascals Triangle problem. . .

. . .Anyone else get a decimal BD on 5 c ii , and 300root3 for 5c part 1?

Haha.. It took all of 2 seconds..! :P

And yes I got a decimal... 992.32m?

nightdream · 13-06-2011 06:15PM

augmented reality wrote: »

That's only the part a of the question, that's meant to be the easy bit!!!
From what I remember it went on to a part h/j.
Project maths is an absolute joke!!! Wish I could've done the normal course:mad:

True, the hard part is the last few questions!!!! These one here are meant to be easy:/
Paper 2 was alright today, although the roof top question took me a long time. And still couldn't get it out:/

electrictrad · 13-06-2011 06:16PM

∈ of N...(positive).........................B

LilMissCiara wrote: »

Haha.. It took all of 2 seconds..! :P

And yes I got a decimal... 992.32m?

Youre probably right

I think I was about 1536.05, ar something in that range. . .probably not right, but anyway. . .

Loved Q4 with the 2 circles. . .pix^2 for part i anyone?

partyatmygaff · 13-06-2011 06:16PM

Pretty good Paper compared to Paper 1.

Q1: I got some extremely strange answers for nearly every section of this question but nothing I couldn't get out.
Q2: Only had enough time to get to 2bii (Not counting it anyway)
Q3: Part a was quite alright. Part B was a bit strange, I got some very strange answers near the end.
Q4: Loved this question. L'Hopital's rule in part A, trig equation and a lovely question concentric circles.
Q5: My favourite question on the paper. The simple trig equation was fine. The tan(A+B) identity proof was fine and getting part bii out was surprisingly pleasant. The 3D trig question went perfectly fine as well.
Q6: Lovely question from start to finish.
Q7: Lovely question apart from Cii which I managed to answer but i'm not quite sure if I went about it the right way.
Q8: Int by parts was fine. The max/man question was also quite nice except I may have made a blunder somewhere throughout. Part C was quite nice too.

All in all, far better than Paper I anyway. I just hope the Marking scheme isn't too harsh on this paper...

BeanbagBallbag · 13-06-2011 06:16PM

for anyone who wants a solution to the tan question..

5 B i)

Tan (A +

= tanA + tanB
....................1- tanAtanB

tan (A +

= sin(A +

..................cos(A +

=sinAcosB +cosAsinB
...cosAcosB + sinAsinB

divide above and below by cosB

= sinAcosB/cosB + cosAsinB/cosB
....... cosAcosB/cosB + sinAsinB/cosB

=sinA + cosAtanB
...cosA + sinAtanB

divide above and below by cosA

= sinA/cosA +cosAtanB/cosA
...cosA/cosA + sinAtanB/cosA

= tanA + tanB
...1 +tanAtanB

ii) A + B= 90'

tan2A = -1
tan2B

tan2A
tan2(90-A)

= tan2A
...tan(180-2A)

=tan2A
(tan180-tan2A)/1 +tan180tan2A .......................tan180 = 0

= tan2A
....-tan2A

= -1

jumpguy · 13-06-2011 06:17PM

In the question on the Line, (b) (iv) (the last part), wasn't the angle AOB = 90 degrees and the angle A'OB' = 90 degrees?

Hence both angles were equal?

A very nice paper. So sickened I got the (c) (iii) of Q8 wrong. I bet that'll be the difference between a grade, and it was so simple! I realised that it was only a sub-in question as I was sealing the paper. :mad:

Probability and stats Q7 (b) was strange, but quite manageable (required thought though - was a bit deceptive).

polka dot · 13-06-2011 06:17PM

< 0........(negative).......................C

LilMissCiara wrote: »

Nope, multiply it out and let the i parts equal each other and the same for the js. You'll have a simultaneous equation then!

Ohhhhhhhhhhhh.

Well I was on the right track (...baby I was born this way :rolleyes:) Yeah. I multiplied it out, put i = i and j=j ...

And that's where the similarities end I'm afraid. Half marks maybe!

partyatmygaff · 13-06-2011 06:19PM

Now that that's over I hope to never ever have to talk about Maths again. I'm unfollowing this thread

what.to.do · 13-06-2011 06:20PM

< 0........(negative).......................C

electrictrad wrote: »

Youre probably right

I think I was about 1536.05, ar something in that range. . .probably not right, but anyway. . .

Loved Q4 with the 2 circles. . .pix^2 for part i anyone?

Those numbers look familiar... I'll assume that I got them too. :P

River Song · 13-06-2011 06:23PM

LilMissCiara wrote: »

Haha.. It took all of 2 seconds..! :P

And yes I got a decimal... 992.32m?

I did too, but I got 1601.something metres.

Daniel S · 13-06-2011 06:24PM

∉ of Q....(craaaaazy)....................Fail

How many marks will I get for doing this?

5(b)(i)

Tan(A+B) =tanA + tanB
...................1- tanAtanB

tan(A+B) =sin(A+B)
................cos(A+B)

=sinAcosB +cosAsinB
....cosAcosB + sinAsinB

.........
.........

= tanA + tanB
...1 +tanAtanB

jumpguy · 13-06-2011 06:27PM

Why is there so much difficulty with the Tan(A+B)?

I had that down as a normal proof.

I also got a decimal for Q5 (c) (ii), it was something in the late 900's, can't remember exactly what.

polka dot · 13-06-2011 06:29PM

< 0........(negative).......................C

jumpguy wrote: »

Why is there so much difficulty with the Tan(A+B)? I had that down as a normal proof.

I also got a decimal for Q5 (c) (ii), it was something in the late 900's, can't remember exactly what.

myself and three of the girls got 9999.86 ... :pac: I'm hoping we all didn't make the same mistake

Shanee. · 13-06-2011 06:30PM

∈of C....(complex)........................D

Easier than Paper II but still reckon i made a balls of it.. So sickened

Anniefearon · 13-06-2011 06:31PM

hahaha reading some ppls comments on this i feel genuinely depressed im so **** at maths just hope i passed the bloody thing. Q3 was HORRIBLE altho the a part was fine, that b was disgusting bar b(i). And as far as trig goes i never want to see a triangle ever again.

Daniel S · 13-06-2011 06:32PM

∉ of Q....(craaaaazy)....................Fail

Shanee. wrote: »

Easier than Paper II but still reckon i made a balls of it.. So sickened

Think you passed?

I think I just passed overall, and on Q6Ci-iv, I had it all right, then decided "You know what, It'd be much better if I f**k with it and make it all wrong!".

WHY DIDN'T I JUST LEAVE IT!!!!!!

EDIT: You mean Paper one was harder than paper two yea?

ChloeElla · 13-06-2011 06:36PM

< 0........(negative).......................C

polka dot wrote: »

myself and three of the girls got 9999.86 ... :pac: I'm hoping we all didn't make the same mistake

I got 1000m.. I think I'm the only one without decimals! :P

* Higher level Maths = The Aftermath *

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