Sunday, July 12, 2015

How to prove √i + √(-i) = √2

We have, √i + √(-i)

= √{ √i + √(-i) }2
= √{ i + (-i) + 2i(-i) }
= √( i - i - 2i2 )
= √(-2i2)
= √2

Simple, yet tricky.

No comments:

Post a Comment