Edexcel C4 June 06 Paper??

Im putting in another request ! Any luck in getting one anyone?? From now on I will only ask once a week
ps it has been 3 days since last time!

Reply 1

mensandan

lennon=god

Im putting in another request ! Any luck in getting one anyone?? From now on I will only ask once a week
ps it has been 3 days since last time!

C4 May 2006 paper attached for your perusal, mensandan

C4May2006.doc89.1KB

Reply 2

DiNaMiTiZ

(c) Explain, with reference to Figure 3, why an increase in the number of values improves the accuracy of the approximation.

i didnt know how to answer that exactly so i wrote some bull and couldnt be bothered to gain that mark anymore

Reply 3

wacko_demon

i think the answer would be:

as you increase the number of strps, you increase the number of trapiziums but at the same time decrease theyre size therefore less area of the curve is disragarded so its more accurate

hope that helps

khalid

Reply 4

jakezg

Thanks for uploading it!
Does anyone have solutions for this?

Reply 5

DiNaMiTiZ

how do you do question 4 part a?
I dont remember how i did it, i think i got it correct though

Reply 6

sour_orchids

Hi, I am a new member, but I cant seem to be able to download the file attachment for the C4 paper, anybody able to help me?

Reply 7

Shmerm

DiNaMiTiZ

how do you do question 4 part a?
I dont remember how i did it, i think i got it correct though

x = sint y = sin (pi/6 + t)

dx/dt = cost y = sin(pi/6)cost + cos(pi/6)sint

y = (cost)/2 + rt3(sin)t/2

dy/dt = -sint/2 + rt3cost/2

dy/dx = dy/dt x dt/dx = -tant/2 + rt3/2

now t=pi/6 so dy/dx = rt3/2 - tan(pi/6)/2 = rt3/2 - 1/2rt3 = 2/2rt3 = 1/rt3

x = sin(pi/6) = 0.5 and y = sin(pi/3) = rt3/2

y - rt3/2 = 1/rt3 (x - 0.5)

y - rt3/2 = x/rt3 - 1/2rt3

2rt3y - 3 = 2x - 1

2rt3y = 2x + 2

rt3y = x + 1

OR

y = x/rt3 + 1/rt3

I think.

Reply 8

DiNaMiTiZ

i think u can do directly differentiation without using the identity for sin (A+B). I did it both ways and it turns out u get the same answer. or maybe i am wrong

Reply 9

Shmerm

DiNaMiTiZ

i think u can do directly differentiation without using the identity for sin (A+B). I did it both ways and it turns out u get the same answer. or maybe i am wrong