題組內容
2. (20%) Let z = x + iy, please use Cauchy-Riemann Equations to verify if the following function is analytic or not?
(1) \( f(z) = e^{z}(\cos y + i\sin y) \)
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2. (20%) Let z = x + iy, please use Cauchy-Riemann Equations to verify if the following function is analytic or not?
(1) \( f(z) = e^{z}(\cos y + i\sin y) \)