Hi guys: just needed some verification on my working out for the following problem:

Question:

Using Cauchy Riemann prove that the function h(z)=sin(Imz) is not differentiable at any point of the strip

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My Solution: Please check to see whether it is correct or not.

let

and

...

, ...

for CR conditions to be fulfilled, and

0 = 0 but

both the CRE conditions aren't fulfilled so the function is not differentiable at any point of the strip

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is this correct?

thanks