cristinasaldenp3t558 cristinasaldenp3t558

20-02-2018
Mathematics

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If i= √-1 what is the value of i^3

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jimthompson5910 jimthompson5910

20-02-2018

Square both sides
i = sqrt(-1)
i^2 = [ sqrt(-1) ]^2
i^2 = -1

Now multiply both sides by i
i^2 = -1
i*i^2 = i(-1)
i^3 = -i

Final Answer: -i
(this is negative i)

Answer Link

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