How to integrate indeterminate integral?

I am trying to integrate an expression using the integral command of MATLAB. The limits of the integral are 0 to Infinity. The integral is indeterminate due to the presence of an exp(x) term in the expression and hence MATLAB gives me NaN. I know I can use l'hopitals rule to solve indeterminate integrals. But, I don't seem to be able to gather how to get this done in MATLAB? Are there options in MATLAB integral function that can be tweaked to handle such cases? What are my options to solve such an indeterminate integral in MATLAB?

[Torsten]

What do you mean by

The integral is indeterminate due to the presence of an exp(x) term in the expression and hence MATLAB gives me NaN. I know I can use l'hopitals rule to solve indeterminate integrals.

?

Try MATLAB's "int". If this does not work, maybe somone can help if you show us the integral you are trying to solve.

Best wishes

Torsten.

Answer 1

[KSSV]

Try quadgk once.

[AGS]

Already tried this before putting up the question. Unfortunately, this doesn't work.