Plots are not shown

[MZelenyElatec]

When I try this example:

// Define your x-values x = 0 : .1 : 10*%pi; // Define your function y = x .* cos(x); // Plot as used in Matlab plot(x, y) // Add title, labels and legend title('x * cos(x)') xlabel('x'); ylabel('y'); legend('y = x * cos(x)');

The plot in jupyter is not shown.