How to do a loop to evaluate a function with a varying value?

Hi there! Studying crack propagation in Comsol, I got to a result that is a function that consists of 4 parameters: Chi, Omega, Lambda0 and CS. The equation is:

J = (Cs.*Omega.*lambda0.^8-Cs.*Omega.*lambda0.^5-2.*chi.*lambda0.^3+lambda0.^3+2.*chi).^2/(2.*chi.*lambda0.^3-lambda0.^3-2.*chi).^2;

How do I evaluate the influence of each parameter on the final value? To me, I could fix 3 parameters and vary the remaining one (the simplest case). But, Is there any how to make this analisys in a different way?

I tried a loop for the simplest case, but it doesn't work:

 for i=1:100
    chi=1:01:1;
    Omega=4;
    Cs=2;
    lambda0=5;
    x(i)=(Cs.*Omega.*lambda0.^8-Cs.*Omega.*lambda0.^5-2.*chi.*lambda0.^3+lambda0.^3+2.*chi).^2/(2.*chi.*lambda0.^3-lambda0.^3-2.*chi).^2;   
end
plot(chi,x)

Shame on me, guys! LOL I am terrible at MATLAB.

Can anyone help me, please?

Answer 1

[Torsten]

chi=0:0.01:1;
Omega=4;
Cs=2;
lambda0=5;
x=(the expression from above);
plot(chi,x)

Best wishes

Torsten.

[InWend]

Hi, Torsten! Thank you for your response, but this solution is not working for me because I get a "x" that is 1x1, when I should get a vector.

[Torsten]

x will be a vector of the same size as chi.

Best wishes

Torsten.

[Star Strider]

You need to define ‘chi’ correctly:

chi=1:01:1;

chi =
     1