Linked Questions

How can NIntegrate be extended with custom implementation of integration rules? This answer of the question "Monte Carlo integration with random numbers generated ...

Suppose I have a function f[x] which is very complicated, together with a function g[f[x]]+h[x] to integrate. That is: ...

I used linear interpolation between points: ...

This question is the result of these other two questions. Question 1 and 2. I thought it would be better to ask a new question rather than deleting previous one. I think When ...

Is there a way to numerically integrate a vector function defined via Piecewise? Example: ...

I'm trying to numerically integrate a function which has a vector-valued slow part and a much faster component which is shared by all the components, i.e. an integral of the form $$ \int_a^b\begin{...

I've seen similar questions on this site but somehow the solutions there didn't manage to solve my specific problem. I have a function mat1 that takes a square $n \times n$ matrix G, and some final ...

In this post How to speed up the plot of NIntegrate? it was suggested that we can speed up the plotting of NIntegrate by using ...

As I understand NIntegrate does some symbolic preprocessing of inputs before it actually goes ahead and numerically integrates. I'm wondering if there is some way to access this intermediate ...

Question How do I use NIntegrate/NExpectation to integrate over a vector function for which each element is a function of a ...

I have the following code producing an interpolated unitary matrix: ...

I encoutered an issue about integrand being non-numerical while trying to integrate a vector function using NIntegrate as shown below: ...

I need to improve the efficiency for numerically evaluating a matrix element, which uses NIntegrate of the several functions (which are all sums of complex exponentials). Creating the functions from ...