[Tutor] Little problem with math module

[Dick Moores]

At 07:40 PM 4/20/2008, John Fouhy wrote:
>If you're going to be working with complex numbers, you might be
>better off looking at scipy or some other module that provides more
>mathematical grunt.

Try mpMath (<http://code.google.com/p/mpmath/>)

With version 0.7:

 >>> from mpmath import power, mpf
 >>> print power(-20,(1.0/3.0))
(1.35720880829745 + 2.3507546124512j)

Or, to a precision of, say, 43:

 >>> mp.dps = 43
 >>> print power(-20,(1.0/3.0))
(1.357208808297453347178047801626363199806658 + 
2.350754612451197324056065041655768179779947j)

Dick Moores


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