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If f(x + iy) = x3 - 3xy2 + i phi...

This question belongs to Engineering Maths Complex Variable
Complex Variable
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If f(x + iy) = x3 - 3xy2 + i$$\phi $$(x, y) where $${\text{i}} = \sqrt { - 1} $$   and f(x + iy) is an analytic function then $$\phi $$(x, y) is

Answer & Solution
Correct Answer: Option B
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