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# Edexcel A2 C4 Mathematics June 2015 - Official Thread Watch

1. (Original post by keynes24)
If you take -3(y-2) to the left hand side then you will get -3ln(y-2) in the left hand side. On the right hand side you just need to do partial fractions as the example indicates
After doing that and solving I end up with the wrong answer though

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2. (Original post by keynes24)
If you take -3(y-2) to the left hand side then you will get -3ln(y-2) in the left hand side. On the right hand side you just need to do partial fractions as the example indicates
No you wouldn't. You would get -1/3(ln(y-2))

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3. (Original post by physicsmaths)
No you wouldn't. You would get -1/3(ln(y-2))

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That's right, that's me trying to solve it on my mobile phone
4. Its probs really simple but can anyone show me how to solve this please

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5. (Original post by clara16)
Its probs really simple but can anyone show me how to solve this please

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You can factorise 50xe^(2x)
6. (Original post by keynes24)
You can factorise 50xe^(2x)
Yeah sorry i should have said i could do that bit but then either x = 0 or 50xe^(2x) = 0 but i dont know how to solve that...

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7. (Original post by clara16)
Its probs really simple but can anyone show me how to solve this please

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Factorise e^2x out since this cannot equal zero so you can divide by e^2x to give 50x+50x^2=0 which I am sure you can solve.

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8. (Original post by physicsmaths)
Factorise e^2x out since this cannot equal zero so you can divide by e^2x to give 50x+50x^2=0 which I am sure you can solve.

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By completing the square?

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9. (Original post by clara16)
By completing the square?

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Well thT or
X(50+50X)=0
Which you can see the solutions from there
10. Hey guys
Does anyone know if they actually ask questions on the easy gcse level vector questions in the beginning of the chapter in the c4 book

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11. (Original post by Medicjug)
Hey guys
Does anyone know if they actually ask questions on the easy gcse level vector questions in the beginning of the chapter in the c4 book

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No, my teacher it hasnt come up.

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12. Thanks

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13. How is everyone's Revison going? Have you all finished c4 in class

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14. Can anyone work out vector bg

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15. (Original post by Medicjug)
Can anyone work out vector bg

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The question would be nice lol.

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16. (Original post by Medicjug)
How is everyone's Revison going? Have you all finished c4 in class

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Yeh finished it last year.

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17. C4 vectors is death - hate it with a passion... along with rates of change NOPE!
18. (Original post by tazza ma razza)
C4 vectors is death - hate it with a passion... along with rates of change NOPE!
C4 vectors are nothing compared to FP3.
19. (Original post by H0PEL3SS)
C4 vectors are nothing compared to FP3.

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20. about 3/4 weeks ago I was ace at C4, not done any c4 since then and now I cant do vectors properly, I can still do the rest though....with the hard parts of integration slowly fading away got a mock next week thursday for it aswell

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