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AP EAMCET20227 Jul 2022Evening ShiftMathematicsComplex NumberActual

The values of , for which 3+2 i 1-2 i is real are

Options

  1. A=n + 3 for n Z
  2. B=n + 4 for n Z
  3. C=n + 2 for n Z
  4. D=n for n Z

Correct answer

A. =n + 3 for n Z

Step-by-step solution

gathered 3+2 i 1-2 i = 4 1-2 i -1 = 4(1+2 i ) 1+4 ^2 -1 gathered which is real. array ll & 8 i =0 =0 & =n , n Z array

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