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1i+2i2+3i3+5i4\large \frac{1}{i} + \frac{2}{i^{2}} + \frac{3}{i^{3}} + \frac{5}{i^{4}}i1+i22+i33+i45
Express the above expression in the form of a+iba+iba+ib.
Clarification: i=−1i=\sqrt{-1}i=−1.
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