Question

If i- -1, what is the value of ; 3? -1 O i 0 1 0 -

Answer 1

$i=\sqrt[]{-1}$$\begin{gathered} i^2=(\sqrt[]{-1})^2 \\ i^2=-1 \end{gathered}$$\begin{gathered} i^3=i^2\times i \\ i^3=-1\times i \\ i^3=-i \end{gathered}$