Hi,
(%i4) f(x):= sin(x)/x$
(%i5) plot2d(f(x), [x,-8,8]);
plot2d: expression evaluates to non-numeric value somewhere in plotting
range.
(%o5)
(%i6) plot2d(f, [x,-8,8]);
expt: undefined: 0 to a negative exponent.
#0: f(x=0.0)
%i5 shows the plot correctly but %i6 does not.
The expression sin(x)/x gives no problem for x=0, but when the function
is called bay name it fails.
Regards,
Jaime