calculate an integral in python (转载) - Mathematics版

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Mathematics版 - calculate an integral in python (转载)

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话题: integral话题: python话题: calculate话题: oo话题: invalid

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发帖数: 273

【以下文字转载自 Quant 讨论区】
发信人: myregmit (myregmit), 信区: Quant
标题: calculate an integral in python
发信站: BBS 未名空间站 (Fri Mar 21 09:39:52 2014, 美东)
I need to calculate an integral in python.
I have imported sympy.
g(a,z) = integral_from_z_to_inf of ( t^(a-1) * e^(-1))
in python:
x,a,z = symbols('x a z')
g = integrate(x**(a-1) * exp(-x), z, oo)
I got error:
ValueError: Invalid limits given: (z, oo)
Any help would be appreciated !
Thanks !

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