evaluate the double integration
显示 更早的评论
May I know I would like to evaluate the double integral of the function and why this error happens and how do I perform the integration?
采纳的回答
You got 2 things wrong (i think) . the error you currently get is for second one. but you will get the error for first one eventually.
first, upper limit of integral shouldn't be function of variable a. because in that case the result of integral would be function of a.
and the other problem is in integral2 function the integration over y (second argument) is first integration so you should change the orders.
syms r theta;
a = 1; %%%%%%%%%%%%%%%%%%%%%%%%
theta_u = -(pi/2);
theta_v = pi/2;
r_u = 0;
r_v = @(theta) (a*cos(theta));
y = @(theta,r) (4 * r.^2 .* cos(theta));
integral2(y,theta_u,theta_v,r_u,r_v)
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Common Operations 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
