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#### CaptainBlack

##### Well-known member

- Jan 26, 2012

- 890

Hi guys, I just need some help with a complex variables question

I need to "Let w=f(z)=coth(z/2). Show that w=f(z)=h(C) = (C+1)/(C-1) where C=g(z)=e^z"

Thanks guys, any help will be super appreciated and best answer given!

CB