On 2/4/12 11:24 AM, Keshav Kini wrote:
On Saturday, February 4, 2012 11:43:44 PM UTC+8, Andrey Novoseltsev wrote:

    But in definite integrals the variable of integration is a dummy one
    and does not exist out of the integral!


+1. This behavior makes no sense to me.

So what happens in a case like this?

sage: f(x,y,z)=sin(x*y*z)

sage: integrate(f,(y,0,3))

Does the result become a function

(x,z) |--> whatever?

I can see it making sense, but I can also see it causing problems.

Thanks,

Jason

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