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I just want to know, What's the difference between x**(1/2), cmath.sqrt(), and math.sqrt()?

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In the event that you take a gander at the documentation for cmath and math separately, you will find that:

  1. cmath "provides access to mathematical functions for complex numbers"
  2. math "functions cannot be used with complex numbers; use the functions of the same name from the cmath module if you require support for complex numbers."
  3. The (**) operator maps to the pow function, with the important difference that pow converts its arguments to float.

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