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AQA A2 MFP2 Further Pure 2 – 24th June [Exam Discussion Thread]

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Original post by Barbecuetime123
6sqrt3 + something arcosh2 + 5

Well **** I got the constant wrong
Lol
Original post by C0balt
Well **** I got the constant wrong
Lol


What the
Original post by Barbecuetime123
What the

I cannot end an exam without silly arithmetic errors apparently
Original post by C0balt
I cannot end an exam without silly arithmetic errors apparently


What did you get for tye constant, i think in got 1
Alright exam, i just couldn't finish 3b and 8a. Friend told me how to do 8a, but can anyone show me how they did 3b, i seperated the integral and got arctanhx for one term, but didn't have time to find a method to integrate the 2nd part.
How did everyone find it ?
I thought it was very difficult!
Original post by Roxanne18
How did everyone find it ?
I thought it was very difficult!


I thought it was slightly harder than last year.. I'm hoping the boundaries will reflect that
Original post by Qcomber
What did you get for tye constant, i think in got 1

I got 1 too. I'm not confident though my friend got 5 too
Could you do the induction?
realised how to do q3b the moment i got in the car afterwards + didnt have enough time to do the last two in 8 properly but other than that i think it was ok ?? can anyone remember how many marks 3b was worth ?
Original post by what-urrp
realised how to do q3b the moment i got in the car afterwards + didnt have enough time to do the last two in 8 properly but other than that i think it was ok ?? can anyone remember how many marks 3b was worth ?


6 big boy
Original post by C0balt
I got 1 too. I'm not confident though my friend got 5 too
Could you do the induction?


No, that induction question was digusting. When i saw it i thought wtf is this??
Original post by Barbecuetime123
6 big boy


thought it was a lot. how annoying :/
Well that was lovely, I had literally no sleep last night but found it completely fine, easier than 2014/15 I think.

Pretty sure I've got 75 since I spammed every tool on my calculator to check all my answers thoroughly for half an hour lol.
50/609

hyperbolic integration: 6root2 + 3cosh^-1x+5

root3pi/18

any familiar?
also, was the minimum value of argw 2pi/3?
Reply 174
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jjsnyder
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10
Original post by IrrationalRoot
Well that was lovely, I had literally no sleep last night but found it completely fine, easier than 2014/15 I think.

Pretty sure I've got 75 since I spammed every tool on my calculator to check all my answers thoroughly for half an hour lol.


Same :P Although may have dropped a few method/explanation marks somewhere.


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jjsnyder
OP
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Original post by tanyapotter
50/609

hyperbolic integration: 6root2 + 3cosh^-1x+5

root3pi/18

any familiar?
also, was the minimum value of argw 2pi/3?


Yeah those are all right


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Original post by jjsnyder
Same :P Although may have dropped a few method/explanation marks somewhere.


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Nah I reckon you've got 75/75 :smile:.
If anyone wants to know how the induction went:

(1+p)1≥1+p(1+p)^1 \geq 1+p obviously, so base case established.

Assume (1+p)k≥1+kp(1+p)^k \geq 1+kp. Clearly we need to multiply by 1+p1+p and we can do so without changing the sign of the inequality because p≥−1⇒1+p≥0p\geq -1\Rightarrow 1+p \geq 0.

Therefore (1+p)k+1≥(1+kp)(1+p)=1+p+kp+kp2=1+(k+1)p+kp2≥1+(k+1)p(1+p)^{k+1} \geq (1+kp)(1+p)=1+p+kp+kp^2=1+(k+1)p+kp^2 \geq 1+(k+1)p, since p2≥0p^2 \geq 0, k≥1⇒kp2≥0k \geq 1 \Rightarrow kp^2 \geq 0.

Therefore result holds for n=k+1n=k+1 and by induction we have result.
Original post by Qcomber
No, that induction question was digusting. When i saw it i thought wtf is this??

Idk how many marks I'd lose for the constant :/
Yeah I stared it for like 15 mins I couldn't work it out
What was 3b about that everyone's talking about?

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