Can I integrate using nested functions using quad?

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Francisco Hernandez
评论： Star Strider 2015-6-10
Hello,
What I'm trying to do is the following. Using a function
f (x) = x + alpha
where alpha=x^2, I'm trying to use the function quad to integrate f(x). The obvious way to do it is
quad(@(x)(x+x.^2),a,b).
Is there a way to integrate only writting alpha, instead of x^2, namely
quad(@(x)(x+alpha),a,b)
Apparently I can't do that, is there any other function that would allow me to do this, or how can I do this? It would be useful for me to do this, because the function I want to integrate is way more complicated than the one described above.
Thank you for your response.

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采纳的回答

Star Strider
Star Strider 2015-6-10
You can do that!
You need to define ‘alpha’ as an anonymous function and refer to it as such in your code for ‘f’:
alpha = @(x) x.^2;
f = @(x) x + alpha(x);
a = 0;
b = 2;
int_f = quad(f, a, b);

更多回答（1 个）

Francisco Hernandez
Thank you! This was very useful :)

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