Question
Answer
$$i^{19}=-i$$
Explanation
| $$ \begin{aligned}i^{19}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-i\end{aligned} $$ | |
| ① | $$ i^{19} = i^{4 \cdot 4 + 3} =
\left( i^4 \right)^{ 4 } \cdot i^3 =
1^{ 4 } \cdot (-i) =
-i = -i $$ |
This page was created using
Complex Expression calculator