Monday, 18 April 2016

complex analysis - Help with improper integral

I need help solving this integral:



0sin(x)xdx




I have a help that says that try to calculate the integral of eizz for a "proper path"... but I don't know how to use that, help.

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real analysis - How to find limhrightarrow0fracsin(ha)h

How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...