Edexcel AS Mathematics C2- 25th May 2016 Thread

could someone go through the log question for me? it was log3(3b+1)-log3(a-2)=-1

log3(3b + 1/a - 2) = - 1
3^-1 = (3b + 1)/(a - 2)
(3b + 1)/(a - 2) = 1/3
3b + 1 = 1/3(a - 2)
3b + 1 = a/3 - 2/3
3b = a/3 - 5/3
b = (a - 5)/9

That's what I did

Looks like you did a terrible job, at making the Mark scheme official.

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I'm in the same boat as you. I think I'll just convince my teachers that I can get an A* next year because they originally thought I would. It depends what you got on C1 and C2 but Stats generally is either a love it or hate it paper. I'd say really concentrate and normal
distribution and probability.

your welcome lol.

I got something like 28/6 and got like 4000 and something?? It still worked though, so what does this mean?

how did people find the upper bound needed to find the area of s ?

Did anyone else get P is 66? How are people getting 120?

The curve touched the X axis at two points. One of them was 0 and the other one, to find out what it was you needed to sub in y = 0 into the equation which would give you a value for x



When you differentiated the equation, and made it equal to 0, you get an answer of X = 16.63. If you sub that value of X back into the equation for P, you get an answer of P = 120

The curve touched the X axis at two points. One of them was 0 and the other one, to find out what it was you needed to sub in y = 0 into the equation which would give you a value for x



When you differentiated the equation, and made it equal to 0, you get an answer of X = 16.63. If you sub that value of X back into the equation for P, you get an answer of P = 120