non linear curve fitting

x={1 2 3];
y=[4 5 6];
z=[1 5 9];
w=10./z;

p=x.^4-y.^2;
q=2.*x.*y;

plot(z,p,z,q);
hold on;

now how can i fit the bellow eqn with above plotted curve:

e=e1+((e2-e1)/i*s*.z)+(k/(i*e2));

% i = complex representation

please help me, i tried several times with Ezyfit but couldn't solve.

[Mihir Daptardar]

Can you elaborate shortly on what is it that you are trying to achieve? Also, it would be helpful to understand your workflow if you could post an working code snippet.

If you are trying to fit data to curve, you may need the Curve Fitting Toolbox. This toolbox provides functions for fitting curves and surfaces to data. For your reference, I have attached a link to the product documentation.

http://www.mathworks.com/help/curvefit/index.html