% Create tau objects. [x, y] = tau('LegendreP', [0 10*pi], 100); % Solve the problem. a = tausolver(x, y, ............................................................% Tau variables. 'y + diff(y, 2)=0', .............................% Ordinary differential equation. {'y(0)=1';'y''(10*pi)=0'}, ..........................................% Conditions. 'exact_solution', 'cos(x)', ................................% Solution (optional). 'pieces', 5, ..................................................% Number of pieces. 'step', 0.1); .......................................% Step for graphical showing.