polyval
Polynomial evaluation.
y=polyval(c,x)
Inputs
c The vector of coefficients of the polynomial to be evaluated.
x The array of independent values at which the polynomial is to be evaluated.
Outputs
y An array of the same size as x containing the evaluated values of the polynomial.


Description
The function evaluates the polynomial c[1]*x^(m-1)+c[2]*x^(m-2)....+c[m] , where m is the size of c .
Example
>>a=[5 2 3 4]
>>r=roots(a)
>>polyval(a,r)
Scaled by 10^-14
   -0.1776 +  0.0999i   
   -0.4441 -  0.1066i   
         0 -  0.0999i