Let z = x + iy, where x and y are real. The points (x, y) in the X - Y plane for which \frac{z+i}{z-i} is purely imaginary lie on

WBJEE 2017 Math Solved Paper

Question : 34 of 75

Marks: +1, -0

Let z = x + iy, where x and y are real. The points (x, y) in the X - Y plane for which

z+i

z−i

is purely imaginary lie on

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