GATE Mechanical Engineering (ME) 2016 Shift 1 Solved Paper

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Question : 13 of 65
 
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An analytic function of a complex variable z = x + i y is expressed as f(z) = u(x,y) + i v(x, y), where i=−1. If u(x, y) = 2xy, then v(x, y) must be
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