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OCR MEI C4 Mathematics June 2016 - Official Thread

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What did everyone do for question 6? Made up loads of rubbish got R co-ordinate (0,4) and Q (4, 0)
Original post by decombatwombat
Find dy/dx

Do y -y1 = m(x-x1) to find the general equation of a tangent using x =2t y =1/t

Find the x and y intercepts by subbing in 0 for x and y

Then the Area = 1/2 x OQ X OR = 8 which is independent of t


Okay lol I did all that but thought I was completely wrong. I guessed that t = 1 and didn't say that the area was independent of t so will I lose a mark for not explaining
I got the area of the triangle as 8 as well for 6 did anyone get something similar? I don't even remember my method 😂
Original post by Qwertykeyboard15
I got the area of the triangle as 8 as well for 6 did anyone get something similar? I don't even remember my method 😂


I got 8 too
you worked out dy/dt and dx/dt
then dy/dx
then worked out line equation
y-y1=m(x-x1)
Then when x=0 y=4/t
when y=0 x=4t
then area = xy/2=8
Can anyone remember what they got for binomial expansion I spent an eternity on it and still sure i got it wrong
Original post by Crozzer24
Can anyone remember what they got for binomial expansion I spent an eternity on it and still sure i got it wrong


P=2
Q=-2
Original post by Crozzer24
Can anyone remember what they got for binomial expansion I spent an eternity on it and still sure i got it wrong


2 and -2?
Original post by Crozzer24
Can anyone remember what they got for binomial expansion I spent an eternity on it and still sure i got it wrong


I got 2 and -2
[QUOTE="Man;66069181" Mr="Mr" Moon="Moon"]P=2
Q=-2[/QUOTE
Fgs ended up with 4 and -4, must have lost a half somewhere! Reckon I'll get any marks for setting up the equations and follow through for validity?
Original post by Qwertykeyboard15
I got the area of the triangle as 8 as well for 6 did anyone get something similar? I don't even remember my method 😂


Same I got 8 for Q6
Reply 90
how did you do that ratio question?
Original post by Haleema567
I got 2 and -2


Got 2 and -2 for Q2
Well THAT was a ****ing disaster.
Original post by Daniel9998
what do you think the grade boundary will be for an A this year?


Maybe 71 for an A?
Did people get 4 for the propotionality constant
How did people find the comprehension? Think I've dropped at least 5/6 marks on it tbh
Some answers I got

-Root10cos(theta+1.249)
-Invalid because4/root10 is bigger than 1
-P=2,Q=-2
-Theta=90,26...?
-volume=16Pie/3
Area was 8
-Q(12/5,8/5,2) not sure about y here
Ratio 3:2?
Last q was show thats
and k=0.811?
(edited 7 years ago)
Reply 97
What did people get for the Cartesian equation of the plane and the angle between the plane and line AQ
Reply 98
Original post by HFancy1997
Some answers I got

-Root10cos(theta+1.249)
-Invalid because4/root10 is bigger than 1
-P=2,Q=-2
-Theta=90,26...?
-volume=16Pie/3
-Q(12.5,6.5,2) not sure about y here
Ratio 3:2?
Last q was show thats
and k=0.811?

Was it not 8pi/3 as it was only rotated through 180 degrees
Original post by Maliha01
Did people get 4 for the propotionality constant


I got 0.25

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