How to integrate x/e^(3x)

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knoxox

I need some help with this equation.

∫xdx/(e^(3x))

Can someone tell me how to get started?

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LCKurtz

Science Advisor

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knoxox said:

I need some help with this equation.

∫xdx/(e^(3x))

Can someone tell me how to get started?

Write it as ##xe^{-3x}## and use integration by parts.