polynomial evaluation for a simple curve.

After I got the coefficent from the command:

p1=polyfit(x,y,4);

the p1 vector is:

p1 =

  -35.4628   39.9257  -14.8278    1.6022    1.1031

the x vector is:

  x=[0:0.001:0.4000]

Now, how do I write like this:

I don't need the polyval command.

Answer 1

[Paul Rogers]

formula = ((x.^4)*-35.4628) + ((x.^3)*39.9257) + ((x.^2)*-14.8278) + ((x.^1)*1.6022) + ((x.^0)*1.1031);