I get the same error message, using the development version; putting instead
shape = 4
scale = 2
(not float) it does not give an error.
On Monday, November 11, 2013 10:05:07 PM UTC+1, Erin Hodgess wrote:
>
> Hello!
>
> I'm having a little trouble with some integration.
>
> My goal is to set up a cumulative distribution for some functions. The
> one below is my attempt at the gamma distribution. However, it does not
> like the integrate statement.
>
>
>
>
> >>> x, y, t = symbols('x y t')
> >>> shape = float(4.0)
> >>> scale = float(1.5)
> >>> z2 = (scale**shape)*gamma(shape)
> >>> y = ((x*(shape-1))*exp(-x/scale))/z2
> >>> y
> 0.0987654320987654*x*exp(-0.666666666666667*x)
> >>> integrate(y,(x,0,t))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File
> "/usr/local/lib/python2.7/dist-packages/sympy/utilities/decorator.py", line
> 30, in threaded_func
> return func(expr, *args, **kwargs)
> File
> "/usr/local/lib/python2.7/dist-packages/sympy/integrals/integrals.py", line
> 1626, in integrate
> risch=risch, manual=manual)
>
> Has anyone run into this before, please?
>
> Thanks in advance for any help.
>
> Sincerely,
> Erin
>
>
>
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