Question

why i^2 = -1, where ' i ' is (iota).

Answer 1

\[i = \sqrt{-1}\]

Answer 2

yes then??

Answer 3

\[i=\sqrt{-1}\]

\[i^2 = (\sqrt{-1})^2 = -1\]

Answer 4

its the definition of iota.. that i = sqrt(-1) ..

it'd be like asking why 2 is called two ? its the definition,,no theoritical reason..

Answer 5

yes but what about this one