functionpolyCoefReal

Information

The function determines the coefficients c of a polynomial of degree n from its real root vector r.

  c_0 + c_1*x + c_2*x^2 + ... + c_n*x^n.

The resulting n+1 coefficients are c[k], k=1 .. n+1, normalised such that the highest coefficient is one.

  c[n+1] = 1

Example

  Real[3] r={1,2,3};
  Real[4] c;
algorithm
  c := PowerSystems.pu.Functions.polyCoefReal(r);

The resulting n+1 = 4 coefficients are:

  c = {-6, 11, -6, 1};
See also
polyCoef, polyRoots

Inputs

Outputs