Thread: [SOLVED] Complex function proof

Show that neither nor is an analytic function of z anywhere.

Is it sufficient to say that neither function is analytic because neither can be put into the form and therefore they can't possibly satisfy the Cauchy-Riemann equations anywhere?

I've not seen that identiy for sin(z) before, but I ended up deriving it in the meantime. Is there a list of similar identities somewhere?

Originally Posted by davesface

I've not seen that identiy for sin(z) before. Is there a list of similar identities somewhere?

Any cpmplex variables textbook should have such a list.