If f r ( α ) = × …. hen ( π ) equals

Maths Functions, Limits, Continuity and Differentiability Limits Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

If f r ( α ) = × ….

hen ( π ) equals

–1

– I

Text Solution

Verified by Experts

The correct answer is:

Using De Moivre's theorem

f r ( α ) = ….

= =

∴ =

= e i π /2 = cos + i sin = i

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