A-level Mathematics/MEI/FP1/Complex Numbers/solutions to powers of j questions

1.

$j^9=(j^5)(j^4)=(j)(1)=j$

2.

$j^{22}=(j^4)(j^4)(j^4)(j^4)(j^4)(j^2)=(1)(1)(1)(1)(1)(j^2)=j^2=-1$

Any questions?, FAQs will be posted here.

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