About complex variables functions,a a ridiculous problem! who can help me?

what is wrong with the following formula?
err.png
Thank you !

Réponses (1)

Yuan Li
Yuan Li le 21 Oct 2019
You need to refer the Complex Function to answer the question. The second step to the third step is not like that in complex function.

Cette question est clôturée.

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le 21 Oct 2019

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