Question: 11. Show that following are an entire function. f(z)= e f(z) = cosh(z) (a) (b) 12. Find the derivative of the following using Cauchy-

11. Show that following are an entire function. f(z)= e-? f(3) = cosh(z) (a) (b) 12. Find the derivative of the following usi

11. Show that following are an entire function. f(z)= e f(z) = cosh(z) (a) (b) 12. Find the derivative of the following using Cauchy- Reimann equations: d 2z-i {[(+2=)] dz z + 2i (b) d dz z+ 2z (a)

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