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Let Z=x+iy where x and y are real. The p...

Let `Z=x+iy` where x and y are real. The points (x, y) in the X-Y plane for which `(z+1)/(z-1)` is purely imaginary lie on

A

a straight line

B

an ellipse

C

a hyperbola

D

a circle

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2017-Multiple Choice Questions
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