Help with Numerical integration (convert symbolic expression to double)

Hello MATLAB community

I am trying to solve the folowing integral

Here is my code

However MATLAB throws an error

Error using integralCalc/finalInputChecks (line 511)

Input function must return 'double' or 'single' values. Found

'sym'.

N=10;
S=[20 25 18 29 17 28 23 20 21 30];
normA = S - min(S(:));
normA = normA ./ max(normA(:));
A=normA;
A(5)=0.1;
syms k x
p=subs(k.^(x-1),k,[A(1:N)]);
L=(prod(p));
fun3=@(x)x.^(N-1).*[L];
q2=(integral(fun3,0,inf));

[AAQIB PEERZADA]

Update:

I found the solution to the problem. matlabFunction converts sym expression to double. This code works

fun=matlabFunction(x.^(N-1).*L);

[madhan ravi]

Isn’t that what I posted one hour ago?

[AAQIB PEERZADA]

I didn't see your response when I was updating my question. It could be because I didn't referesh the webpage. Thanks for your help though.

Answer 1

[madhan ravi]

N=10;
S=[20 25 18 29 17 28 23 20 21 30];
normA = S - min(S(:));
normA = normA ./ max(normA(:));
A=normA;
A(5)=0.1;
syms k x
p=subs(k.^(x-1),k,A(1:N));
L=prod(p);
fun3=matlabFunction(x.^(N-1).*L);
q2=integral(fun3,0,inf,'arrayvalued',1)