integration help function 1/x(e^x -1) from 10^-19 ish to infinity
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I want to integrate 1/x(exp(x) -1) from a very small number of order 10^(-19) to infinity. The integral function refuses to do this. Any help?
Réponses (1)
Jackson Burns
le 8 Sep 2019
Hi Sofia!
Since you didn't post any code or errors, I don't know what was wrong. It was likely an error with your function definition. Functions that are going to be called with matrices need to be able to operate on matrices, so instead of using / we would use ./ which is elementwise division (otherwise we would be attempting matrix divison, which is not defined).
Here's my solution:
f = @(x) (exp(x) - 1)./x
sol = integral(f,1*10^-19,Inf)
I can't tell exactly what function you are trying to integrate, so I apologize if it is the incorrect one.
Good luck!
1 commentaire
Rik
le 8 Sep 2019
I suspect it should be f=@(x)1./(x.*(exp(x) -1)); instead, but your point still stands.
Voir également
Catégories
En savoir plus sur Parallel Computing dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!