Integral of combined handle functions

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?

Answer 1

[Star Strider]

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

.

[Tiago Araujo]

TKS

[Star Strider]

As always, my pleasure!