pow2orthmatrix

Power to orthogonal matrix.


Syntax
   W = pow2orthmatrix(M)

Description
   W = pow2orthmatrix(M) returns the inverse of V matrix, where V is such 
   that XV = P, X = [x^0, x^1, ...] is the power series and 
   P = [P_1, P_2, ...] is the orthogonal basis. This is a more stable way
   to compute better than V^-1, inv(V) or I\V.          

Input
   M = matrix suth that PMa = xP (double matrix), or 
   M = itau object.

Output
   W = inverse of V (double matrix).

See also
  orth2powmatrix.