Question

what is i times -i ?

Answer 1

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

Answer 2

o............wow.thanx !!

Answer 3

\[i^2 =-1 => -i^2=1\]

Answer 4

the i's have it

Answer 5

myin u copied mine :P :P

Answer 6

te-he

Answer 7

i didn't like your negative exponent lol

Answer 8

oh :( Typo :P

Answer 9

that's my line...