Syntax

   F = volt(varargin)

Description

   F = volt(y, K) returns the matrix F that translates the Volterra
   integral term int_a^x(K(x, t)y(t)dt) into an orthogonal polynomial
   basis.

Inputs

   y = dependent tau variable (dtau object).
   K = two variable function K(x, t) (char or numeirc matrix).
       If K is char, then the coefficients will be automatically found.
       If K is numeric column, then is related with coeff a of aP(x).
       If K is numeric row, then is related with coeff a of aP(t).
       If K is double matrix, then is related with coeff a of aP(x)P(t).

Output

   F = matrix sized by [y.n y.n] in an orthogonal polynomial basis.

Example

   y = dtau('ChebyshevU', [1 2], 5);
   F = volt(y, 'cos(x+t)'); % F is the matrix that translates
                            % int_1^x(cos(x+t)y(t)dt) into the
                            % specified orthogonal basis.

See also

  fred, diff and int.