Thread: Showing that f'(z) does not exist at any point (complex analysis)

I am having a hard time showing that f'(z) does not exist at any point for

f(z)=z-z(conjugate)

An explanation would be greatly appreciated,

Thanks.

Originally Posted by nankor

I am having a hard time showing that f'(z) does not exist at any point for

f(z)=z-z(conjugate)

An explanation would be greatly appreciated,

Thanks.

do you mean



so





So does not satisfy the cauchy-reimann equation at any point so it is not diff at any point