trapezoidal numerical integration within a function

1 次查看（过去 30 天）
Rhea Gorringe
Rhea Gorringe 2020-5-15
回答： Nikhil Sonavane 2020-5-19
Hello :)
I need to perform a trapezoidal intergration however i am unsure how to do this inside a fuction as i have only every done it with out. any help is very much apriacted.
  3 个评论
显示 1更早的评论
Rhea Gorringe
Rhea Gorringe 2020-5-15
trapz() i think. this is my first time trying to use matlab on my own i have this so far (i know it wrong)
function tarea = trapezint(inarray,llim,ulim)
inarray=0;
llim=1;
ulim=100;
h=(llim-inarray)/ulim;
sum=0;
f=@(x) x.*sin(x);
for i=1:1:n-1
sum= sum + f(inarray+i*ulim);
qt=sum((h*f((x(1:ulim)+x(2:ulim+1)))/2)
Ameer Hamza
Ameer Hamza 2020-5-15
Are you trying to integrate x*sin(x) from 1 to 100? What is the role of 'inarray' here?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Nikhil Sonavane
Nikhil Sonavane 2020-5-19
I would suggest you go through the documentation of trapz function as that would help you trapezoidal numerical integration efficiently.

类别

在 Help Center 和 File Exchange 中查找有关 Numerical Integration and Differentiation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by