### 5.29.11 Evaluation of a polynomial : peval polyEval

peval or polyEval takes as argument a polynomial p given by the list of its coefficients and a real a .
peval or polyEval returns the exact or numeric value of p(a) using Horner’s method.
Input :

peval([1,0,-1],sqrt(2))

Output :

sqrt(2)*sqrt(2)-1

Then :

normal(sqrt(2)*sqrt(2)-1)

Output :

1

Input :

peval([1,0,-1],1.4)

Output :

0.96