"J. Simons" <simons17 at xs4all.nl> schrieb:
> L.S., I tried to plot a signumfunction in the following way :
> (%i36) f(x):=x^3;
> (%o36) f(x):=x^3
> (%i37) plot2d(signum(f(x)),[x,-4,4]);
> But I got no plot at all ? Thanks in advance for your answer/help. Jos? Simons
Dear Jose,
try
plot2d( [signum(f(x))] , [x,-4,4], [y,-4,4] );
Best Wolfgang