Question

Calcule a potencia de i
A) I¹²⁵=
B) I⁴³

Answer 1

$\Large\boxed{\begin{array}{l}\tt a)~\sf i^{125}\\\sf 125=4\cdot31+1\\\sf i^{125}=i^1=i\\\tt b)~\sf i^{43}\\\sf 43=4\cdot10+3\\\sf i^{43}=i^{3}=-i\end{array}}$