Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium

New issue 2489 by [email protected]: Integral of two delta functions evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2489

x, x_1, x_2 = symbols('x,x_1,x_2')
f = x_2 * DiracDelta(x-x_2) * DiracDelta(x_2-x_1)
integrate(f, (x_2, -oo, oo))
x_1

The expected result is
x_1*DiracDelta(x-x_1)



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