Can I integrate using nested functions using quad?
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Francisco Hernandez
on 10 Jun 2015
Commented: Star Strider
on 10 Jun 2015
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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Accepted Answer
Star Strider
on 10 Jun 2015
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);
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