Question: Show that the function f z x x x 2 y 2 y yx 2 y 2 i is analytic in any open set not

Show that the function f z x x x 2 y

2 y yx 2 y 2 i is analytic in any open

Show that the function f z x x x 2 y 2 y yx 2 y 2 i is analytic in any open set not containing 0 0 Also compute f z

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