Using integral to define a function

Question

DONGUK KIM 2023-11-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2051572-using-integral-to-define-a-function

编辑： Dyuman Joshi 2023-11-24

采纳的回答： Dyuman Joshi

在 MATLAB Online 中打开

So I'm trying to define a function which has an integral inside.

Below is a simplified version of the function with the same error message: Unrecognized function or variable 'E'.

What I don't get is since variable E goes away after integral, shouldn't there be no reason for me to define it?

Also, how could this problem be resolved?

Thanks in advance.

result(0)
function test_integral = result(V)
   
    test_integral = integral( @temp, E, -1, 1);
    function tempf = temp(E)
        tempf = E.*V;
    end
end

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Answer 1

Dyuman Joshi 2023-11-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2051572-using-integral-to-define-a-function#answer_1359027

编辑：Dyuman Joshi 2023-11-24

在 MATLAB Online 中打开

Remove the E from the integral() call, as it is not required.

Refer to the documentation of integral to know more about the syntax of the function.

result(2)
ans = -1.1102e-16
result(4)
ans = -2.2204e-16
result(6)
ans = -3.3307e-16
function test_integral = result(V)
   
    test_integral = integral(@temp, -1, 1);
    function tempf = temp(E)
        tempf = E.*V;
    end
end