- #1

- 13

- 0

i will keep thinking of this because i'm not able to solve it.. and this make me suffer..

∫ x / (1 + e

^{x}) dx

please help me to solve this.. :)

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- Thread starter all-black
- Start date

- #1

- 13

- 0

i will keep thinking of this because i'm not able to solve it.. and this make me suffer..

∫ x / (1 + e

please help me to solve this.. :)

- #2

- 22,129

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- #3

- 13

- 0

ohh... i see... thank you micromass...

but if you want to.. can you show how to solve this by using the polylogarithm? :)

- #4

- 807

- 23

ohh... i see... thank you micromass...

but if you want to.. can you show how to solve this by using the polylogarithm? :)

Do you have any background in complex analysis?

- #5

- 13

- 0

Do you have any background in complex analysis?

yess.. but not so deep.. just a basic of complex analysis..

- #6

- 2

- 0

integration by parts is this: ∫ u dv = u.v - ∫ v du

- #7

HallsofIvy

Science Advisor

Homework Helper

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- #8

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ohh... i see... thank you micromass...

but if you want to.. can you show how to solve this by using the polylogarithm? :)

If you know the polylogarithm functions, then the formal result is :

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