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Returns the principle value square root of x.
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Returns the nth root of x.
Operands:
- x is a scalar number or expression.
- n is a positive integer.
Notes:
- In general, every number has n
nth roots. For example, there are two equally
valid square roots of 4, 2 and −2. The square root operator
returns the principal-valued root, the one with the smallest complex argument. Since the argument of 2 is 0,
and that of −2 is π/2, the result
is 2. This is also the real-valued root.
- The nth root returns a real
root whenever one is available. To return the principal value of the nth root of x, raise x
to the power 1/n
instead.