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    Solving a Complex Number Equation

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    Solve the equation z^2= -1 using z=(x,y) and the basic definitions.

    a. z=(0,2),(0,-2)
    b. z=(1,0),(-1,0)
    c. z=(4,0),(-1,0)
    d. z=(0,1),(0,-1).

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    Solution Preview

    The correct answer is (d)
    z = (0,1), (0,-1)

    since, z^2 = ...

    Solution Summary

    The solution gives a clear, concise set of steps showing the calculations taken to find the solution to the multiple-choice complex number problem given by the asker.