Which of the following function f (z), of the complex variable z , is NOT analytic at all the points of the complex plane?
- a)f (z) = z2
- b)f (z ) = logz
- c)f (z) = ez
- d)f (z ) = sinz
Correct answer is option 'B'. Can you explain this answer?
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logz is not analytic at all points.
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