- #1

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**∫ x/(4-x) dx.**

when there's ∫f'(x)/f(x) you can use natural log but waht about this

full workings or some tips anyone?

Thanks.

- Thread starter briton
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- #1

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when there's ∫f'(x)/f(x) you can use natural log but waht about this

full workings or some tips anyone?

Thanks.

- #2

arildno

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Hint: Add to the numerator 0=4-4

- #3

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erm so you get

∫ 4/(4-x) dx - ∫1 dx ?

∫ 4/(4-x) dx - ∫1 dx ?

- #4

arildno

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That was the idea, yes.

- #5

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cheers!

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