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NDA 2010
Exam
NDA
Year
2010
Subject
Mathematics
Chapter
Complex Number

NDA 2010 · Mathematics · Complex Number

If x^2+y^2=1 , then what is (1+x+i y)/(1+x-i y) equal to?

If x2+y2=1x^2+y^2=1, then what is 1+x+iy1+x−iy\frac{1+x+i y}{1+x-i y} equal to?

Options

  1. Ax−iyx-i y
  2. Bx+iyx+i y
  3. C2x2 x
  4. D−2iy-2 i y

Correct answer

A. x−iyx-i y

Step-by-step solution

The correct answer is option (A).
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