Edexcel A2 C4 Mathematics June 2015 - Official Thread

Unfortunately, it does; $3^{2x} = (3^2)^x$ by C1 exponentiation laws.

My answers for this paper were:
1) 2+5x/4-25x^2/64
3rt2/2
181/128
2)(2x-3y)/(3x+8y)=dy/dx
+-(24/5,16/5)
3)x=4ln(2)
12+32ln(2)^2-32ln(2)
4) A=5,1,3
p=15
31.82
d=7.46
5)27/32
a=2 b=-5
6)k=4
4pi/3 + rt(3)/2
7) 1/(p-2) - 1/p
0.473
8) x=2 - 1/ln3
area = 13pi/ln3
this is most of the questions that i wrote down my answers to, I am confident in most of them although I am prone to the occasional stupid mistake so if you disagree then I will not argue with you.

I know. I've deleted the comment now. I was getting muddled up with someone making it 3 to the x squared. I look like an idiot now hahaha.

I agree with all of these.

just because u saw ur answer in someones answers doesnt make it a mark scheme answer lol

just because u saw ur answer in someones answers doesnt make it a mark scheme answer lol

My answers, judging by other people's opinions I think they're right:

Did anyone else just use a substitution on the last question? It made it so much easier.

Would it matter if you wrote 26pi/2ln3 ??


Posted from TSR Mobile

You have to get a minimum of 180 UMS across BOTH C3 and C4.

So you could score 95 UMS in C3 and 85 UMS in C4.

And on top of that you need to get a minimum of 480/600 UMS in your whole A Level.

Sorry but there's some wrong answers on there

My answers for this paper were:
1) 2+5x/4-25x^2/64
3rt2/2
181/128
2)(2x-3y)/(3x+8y)=dy/dx
+-(24/5,16/5)
3)x=4ln(2)
12+32ln(2)^2-32ln(2)
4) A=5,1,3
p=15
31.82
d=7.46
5)27/32
a=2 b=-5
6)k=4
4pi/3 + rt(3)/2
7) 1/(p-2) - 1/p
0.473
8) x=2 - 1/ln3
area = 13pi/ln3
this is most of the questions that i wrote down my answers to, I am confident in most of them although I am prone to the occasional stupid mistake so if you disagree then I will not argue with you.

Did anyone else just use a substitution on the last question? It made it so much easier.

Exactly what i got. 75/75 whoz


Posted from TSR Mobile

My answers for this paper were:
1) 2+5x/4-25x^2/64
3rt2/2
181/128
2)(2x-3y)/(3x+8y)=dy/dx
+-(24/5,16/5)
3)x=4ln(2)
12+32ln(2)^2-32ln(2)
4) A=5,1,3
p=15
31.82
d=7.46
5)27/32
a=2 b=-5
6)k=4
4pi/3 + rt(3)/2
7) 1/(p-2) - 1/p
0.473
8) x=2 - 1/ln3
area = 13pi/ln3
this is most of the questions that i wrote down my answers to, I am confident in most of them although I am prone to the occasional stupid mistake so if you disagree then I will not argue with you.

We said that the radius of the cone was 2 when it was actually 9 😢