Integral of combined handle functions

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Tiago Araujo
Tiago Araujo 2021-6-24
评论： Star Strider 2021-6-25
I need to do a integral with a function by combining two functions, something like this:
syms q r
x(q,r) = q + 2*r;
y(q,r) = q*9 + r;
G = @(q,r) x+y
integral2(G,1,2,1,2)
It is only a example, my real problem is much more complex. How can i do that?

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Star Strider
Star Strider 2021-6-24
Ran in:
Don’t use the Symbolic Math Toolbox for this.
Create ‘x’ and ‘y’ as anonymous functions instead, then call them in ‘G’:
x = @(q,r) q + 2*r;
y = @(q,r) q*9 + r;
G = @(q,r) x(q,r) + y(q,r);
G = function_handle with value:
@(q,r)x(q,r)+y(q,r)
Gint = integral2(G,1,2,1,2)
Gint = 19.5000
.

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