清空筛选条件
清空筛选条件

How can I calculate the integral2 using sum of prod?

1 次查看（过去 30 天）
Han
Han 2020-1-5
编辑： Vladimir Sovkov 2020-1-5
syms m r theta
xm = 1:29;
ym = 1:29;
fun = @(r,theta) (...
symprod((1 - exp(((1 - sqrt((r.*cos(theta)-(xm(m))).^2 + (r.*sin(theta)-(ym(m))).^2))))),m, 1, 29 )...
);
solve = integral2(fun,0,30,0,2 * pi);
How can I solve this problem?

请先登录，再回答此问题。

采纳的回答

Vladimir Sovkov
Vladimir Sovkov 2020-1-5
编辑：Vladimir Sovkov 2020-1-5
symprod does not support the element-wise multiplication, which is needed for integral2.
You sholuld probably define your fun via a little longer code with the element-wise operations, e.g.
xm = 1:29;
ym = 1:29;
fun = @(r,theta)(1-exp(((1-sqrt((r.*cos(theta)-(xm(1))).^2+(r.*sin(theta)-(ym(1))).^2)))));
for k=2:numel(xm)
fun = @(r,theta) fun(r,theta) .* (1-exp(((1-sqrt((r.*cos(theta)-(xm(k))).^2+(r.*sin(theta)-(ym(k))).^2)))));
end
solve = integral2(fun,0,30,0,2 * pi)

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Calculus 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