11 votes
Accepted

Mathematica 13.0 simplifies trigonometric integral wrong

It's not too uncommon for Integrate to return something which has a special case that can't be evaluated properly without taking a limit. In your case there is a ...
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  • 19.2k
9 votes

Integral of orthogonal Bessel functions

The OP's integral is missing information about the subscripted variables (which I avoid) and the change of coordinates leading to the interval from b to ...
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  • 213k
8 votes

Mathematica 13.0 simplifies trigonometric integral wrong

Here's a way to eliminate the singularities in the answer, provided you can be happy removing a singularity of the form Sin[u]/u with ...
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  • 213k
4 votes
Accepted

Plotting, Integrating two variable function with cross-restricted domain

For the plot you can use RegionFunction, which takes a pure function which takes x, y, and z values:: ...
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  • 123k
3 votes
Accepted

Integration over an implicit region

You want the region of integration to be defined by inequalities, rather than equalities. Your region can be described as follows: ...
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  • 58.4k
2 votes

Plot for DSolve in mathematica

...
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  • 120k
2 votes

Mathematica 13.0 simplifies trigonometric integral wrong

Under natural assumptions one obtains ...
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  • 16.7k
2 votes

Symbolic scalar-by-matrix derivative

I tried the NCAlgebra package: << NC`; << NCAlgebra`; SNC[X, A] NCGrad[tr[tp[tp[X] ** A] ** (tp[X] ** A)], A] And ...
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  • 1,626
2 votes

Getting the same result from Integrate as Probability

Got it figured out, Mathematica just wants some assumptions about the integration variables and needs GenerateConditions->False: ...
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1 vote

Numerical Plot for an example

When we use NDSolveValue, the result sol is the interpolation function. It is difference to ...
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  • 30.6k
1 vote
Accepted

Integrate: slow and wrong results

To investigate what's happening during the integration try using EvaluatioMonitor or StepMonitor.
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  • 26

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