1 | initial version |

The indefinite integral of a given function is only defined up to an additive constant

(and your results differ by a constant)

The definte integral, for example

sage: ii=integrate(100*exp(-1/2*x^2/8^2)*cos(x),x,0,+oo);

sage: ii

400*sqrt(pi)*sqrt(2)*e^(-32)

is the same in Mathematica (WolframAlpha)

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