numtheory[mroot] - modular root
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Calling Sequence
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mroot(x, r, p)
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Description
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The function mroot computes the rth root of x . It finds an integer y such that if possible. Otherwise, it returns FAIL.
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The order, r, of the root must be prime.
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The command with(numtheory,mroot) allows the use of the abbreviated form of this command.
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