Question
Find the points where the function is not analytic.
Answer :
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A function of a complex variable is said to be analytic at a point if it is differentiable in some neighborhood around that point. For a complex function ( f(z) = u(x,y) + i v(x,y) ), where ( z = x + iy ), the necessary condition for analyticity is that the Cauchy-Riemann equations hold: [ \frac{\partial u}{\partial x} = \frac{\partial v}{\partial y}, \quad \frac{\partial u}{\partial y} =
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