LagrangeEvaluate.txt

Given an X, and the coefficients L_k  k=0..n

Y := sum(L_n X^n) k=0..n (in theory)

In practice, Horner's rule is used to evaluate the polynomial
For example:

Y := L_0+(L_1+(L_2+L_3*x)*x)*x for r=n

Lagrange(n, X, Y, L);
Y = Lagrange.evaluate(n, L, X)