function dydt = logistic_deriv ( t, y )

%*****************************************************************************80
%
%% logistic_deriv returns the derivative for the logistic ODE.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    07 September 2020
%
%  Author:
%
%    John Burkardt
%
%  Input:
%
%    real T: the current time.
%
%    real Y: the current solution value.
%
%  Output:
%
%    real DYDT: the value of dY/dT.
%    
  dydt = y .* ( 1.0 - y );

  return
end

