Question
Answer
$$4i^5=4i$$
Explanation
| $$ \begin{aligned}4i^5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4i\end{aligned} $$ | |
| ① | $$ 4i^5 = 4 \cdot i^{4 \cdot 1 + 1} =
4 \cdot \left( i^4 \right)^{ 1 } \cdot i^1 =
4 \cdot 1^{ 1 } \cdot i =
4 \cdot i $$ |
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