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31 July, 12:06

If i = √-1 what is the value of i^3

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  1. 31 July, 12:29
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    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)
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