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User Defined Values with Integral and integral2

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Chad
Chad 2017-4-18
回答： Steven Lord 2017-4-18
Dear Forum,
I am trying to integrate a function with pre-defined values. For example, I want to integrate;
L = 7.5; x_l = [0:.1:L]; r_l = x_l*2;
{Yn = integral(@myfun,0,L)
function f=myfun(x)
f = (D+x)/((D+x)^2+r_l^2);
end}
The variable r_l is defined from x_l. How do I use x_l instead of x to evaluate this integral?

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回答（1 个）

Steven Lord
Steven Lord 2017-4-18
The integral documentation page has a link to a page that discusses how to pass additional parameters into the integrand function with which you call integral. While the examples on that page use fzero as the "function function" being called, the techniques work with integral as well.

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