how to get updated value of function everytime in the loop

Hello. I am using the below code in the loop and here is the problem area. When I use the code(following)

for i=1:100,

G=i;

A=[-1/10 0;G -(1+10*G)/10];

B=[2 2 0;2 G G];

C=[1 -1];

I=[1 0;0 1];

syms s

Q=C*((s*I-A)^(-1))*B;

Q(2);

Q(3);

syms t

M=(ilaplace(Q(2),s,t))^2;

N=(ilaplace(Q(3),s,t))^2;

m=integral(M,0,Inf);

n=integral(N,0,Inf);

Sw=1;Sv=100;

Ess(i,:)=Sw*m+Sv*n;

We(i,:)=Sw*m;Ve(i,:)=Sv*n;

end

Error using integral (line 83) First input argument must be a function handle.

*now i think the error is in the line where I use M=(ilaplace(Q(2),s,t))^2; and N=(ilaplace(Q(3),s,t))^2;, but how else I can achieve to calculate the integral as each time the value of G is different in each loop and hence I cannot write M and N as function of t because it changes every time the loop is executed depending on the value of G. *

Answer 1

[Walter Roberson]

ilaplace is a symbolic transform, giving you a symbolic result. You need to convert the symbolic result to a function handle. See matlabFunction() for that.

Or you could consider using symbolic integration, int() instead of integral()

[upinderjeet]

Dont you think that in both the cases you recommend, I still have to write the expression for that symbolic function before I cud use a function handle or int. If I am right then how can I cater to the changing value of that expression every time the new loop is being executed.

[upinderjeet]

?????