Sum
Find the value of i + i2 + i3 + i4
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Solution
i + i2 + i3 + i4
= i + i2 + i2 .i + i4
= i – 1 – i + 1 ...[∵ i2 = – 1, i4 = 1]
= 0.
Concept: Algebra of Complex Numbers
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