MEI FP2 discussion thread 14/01/13

Hello all,

Couldn't find an existing thread for this exam so decided to create one :smile:

wanted to gauge people's thoughts towards it - I agree that it's a tough paper and the hour and a half time limit can be a bitch, but the questions always seem to follow the same basic layout...

Anyway, if anybody has any questions post them here and I or any other friendly presence shall attempt to give assistance :smile:

also feel free to share revision tips and general pre-exam panic...

Good luck to all :smile:

Reply 1

Malabarista

11

How did it go? It started off all right for me but then the 6 marker in q2 and the 9 marker at the end screwed me over a bit. Hopefully got some working marks for those bits. If only I'd had an extra 10 mins.

Reply 2

TimetoSucceed

7

Original post by Malabarista

How did it go? It started off all right for me but then the 6 marker in q2 and the 9 marker at the end screwed me over a bit. Hopefully got some working marks for those bits. If only I'd had an extra 10 mins.

the 6 marker in q.2 and the 7 marker in q.4 really made me angry lol. Also the cartesian question in q.1, for some reason I couldn't do it =S

Reply 3

30086533

Can anyone remember how many marks the eigenvector question was?

(edited 11 years ago)

Reply 4

stevencarrwork

The equilateral triangle took way too much time.

All I had to do was multiply (2 + 4 j) by (-1/2 + 1/2 j sqrt 3) and by (-1/2 - 1/2 j sqrt 3), but it took me so long to think of that, and I'm not sure I did it right.

The integral at the end of Q4 was also unpleasant.

Reply 5

alexbumpoo

Original post by TimetoSucceed

the 6 marker in q.2 and the 7 marker in q.4 really made me angry lol. Also the cartesian question in q.1, for some reason I couldn't do it =S

the exact same ones for me mate. do you know how to do the 6 marker yet ? and what does the gradient is stationary mean ! ?

Reply 6

alexbumpoo

ive just realised what it means actually it means if d^2y/dx^2 is 0 how could i be so dumb!

Reply 7

TimetoSucceed

7

What do you guys think the grade boundaries will be?

Reply 8

stevencarrwork

Original post by 30086533

Can anyone remember how many marks the eigenvector question was?

12 I believe. Eigenvalues were 1, 3 and -4.

Was the cartesian equation of circle centre (0,2) in Q1 , r = 4 sin theta?

Reply 9

stevencarrwork

Original post by alexbumpoo

the exact same ones for me mate. do you know how to do the 6 marker yet ? and what does the gradient is stationary mean ! ?

Stationary gradient means d2y/dx^2 = 0.

Reply 10

Jam'

15

The triangle question was annoying - I just realised as I left that I could use double angle formulae to find an exact value for x and y :angry:

That's almost 8 marks gone now :frown:

everything else was fine

That was like a STEP q

(edited 11 years ago)

Reply 11

Jam'

15

Original post by stevencarrwork

12 I believe. Eigenvalues were 1, 3 and -4.

Was the cartesian equation of circle centre (0,2) in Q1 , r = 4 sin theta?

Yup

Reply 12

TimetoSucceed

7

what do you guys think the grade boundaries will be at?

I'm thinking 54/72 for an A maybe?

Reply 13

TheoDanko

2

The eigenvector question was 12 marks total, the eigenvalues were lamda=-4,1,3.

I have the question paper if anyone has any questions

Reply 14

TheoDanko

2

Sorry for that double post, didn't see there had already been an answer to that question.

Reply 15

TheoDanko

2

Did anyone actually manage to reach the end result in Q4(iii), I couldn't get it in the form pi(3-(5/4)ln(5))

Reply 16

gymrat

7

Q2 triangle question :frown:

Completely missed out the gradient of the curve bit, overlooked it.

That's my A* gone again.

(edited 11 years ago)

Reply 17

stevencarrwork

Original post by TheoDanko

Did anyone actually manage to reach the end result in Q4(iii), I couldn't get it in the form pi(3-(5/4)ln(5))

Yes, it worked out, once I realised that my initial answer of 75 pi was wrong.

The integral worked out to be 3.25 sinh(2x) - 3 cosh (2x) - 2.5 x

Put in an x of 0.5 ln 5, and the upper limit is - 1.5 ln 5.

Put in an x of 0 and the lower limit works out to be -3.

(edited 11 years ago)

Reply 18

Malabarista

11

Original post by stevencarrwork

Yes, it worked out, once I realised that my initial answer of 75 pi was wrong.

The integral worked out to be 3.25 sinh(2x) - 3 cosh (2x) - 2.5 x

Put in an x of 0.5 ln 5, and the upper limit is - 1.5 ln 5.

Put in an x of 0 and the lower limit works out to be -3.

I realised that it worked out.

Once I did it again.

At home.

I should get working marks, at least I hope. I successfully squared out the brackets and then used the double angle formulae, and then attempted to integrate pi * y^2 with the correct limits. Damn, what a bitch exam. That said, questions 1 and 3 were an absolute pleasure.

Reply 19

jaspreet

i done the roots question in decimal form, how mark scheme will i loose

MEI FP2 discussion thread 14/01/13

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