xlist = linspace ( -5, 2, 201 );
ylist = xlist.^3 + 4 * xlist.^2 - 5;
plot ( xlist, ylist, xlist, 0*ylist, 'k:', 'LineWidth', 3 )
grid on
xlabel ( '<-- X -->' )
ylabel ( '<-- Y -->' )
title ( 'y=x^3+4x^2-5', 'Fontsize', 24 )
print ( '-djpeg', 'wiggles.jpg' )