How do we integrate x/(3-x)(3+2x) with, ofc, respect to x?

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- DiscussionHello, I find it hard to understand the regions of integral when solving multivariable integrations, such as in double integration. I would like to discuss and learn about strategies and methods on how to go through the process of facilitating knowledge about the region/interval of the integration. Would you like to share your thought process when you solving a double integral in polar coordinates? for example: Regards /Anhard
- Questionf is a function defined in R: f(x)=x ;if x ϵ Q f(x)= 0;if x ∉ Q PROOF THAT lim f(x) = 0 when x --> 0

Partial fractions decomposition is 1/3(1/(3-x)+1/(3+2x)), use u-substitution with u1=3-x and u2=3+2x, then integrate into natural log.

If I have misinterpreted your notation, please let me know, and I will attempt another explanation.