math power 7 answers

By building upon the basic definition that $i^{2}$ = - 1, we can write higher powers of i as follows: $i^{0}=1,\: i^{1}=i,\: i^{2}=-1,\: i^{3}=i^{2}\times i=-i,\: i^{4}=(i^{2})^{2}=(-1)^2=1$ $i^{5}=i^{4}\times i=1\times i=i,\: i^{6}=i^{4}\times i^{2}=1\times(-1)=-1,\: i^{7}=i^{4}\times i^{3}=1\times(-i)=-i,\..

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