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If w=tan z

How would I show that any w not equal to +i or -i,

is the image of some z in C, and what are the solutions

of w=tan z if w doesnt equal to +i or -i?

I can easily show that tan z can never equal +i or -i,

but thats not the same thing also.

Note: without using the arctan w identity.

Thank you

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# ComplexAnalysis tan z

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