Question
Answer
$$i^9=i$$
Explanation
| $$ \begin{aligned}i^9& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}i\end{aligned} $$ | |
| ① | $$ i^9 = i^{4 \cdot 2 + 1} =
\left( i^4 \right)^{ 2 } \cdot i^1 =
1^{ 2 } \cdot i =
i $$ |
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