Extraction of parameters for a function

f(x)=(a0+a1*x+a2*x^2)/(b0+b1*x+b2*x^2) how to find the coefficients of a0,a1,a2,b0,b1,b2,b2 such that the above function behaves as cosine function,when 0<x<pi

Answer 1

[Birdman]

Firstly, define two vectors in your workspace:

 x=0:0.01:pi;
 y=cos(x);

Now, open Curve Fitting app and see the attached figure to see what to do.

Then, Click on Fit->Save to Workspace and save this model to your workspace by naming the save fit to MATLAB Object named to f. Then, you will have your model saved. If you type

 plot(x,f(x))

you will see the plot that looks almost like a cosine. Hope this helps.

Answer 2

[AYESHA FATIMA]

Hello Birdman Its not letting me save the fit to save work space after following the procedure