/ sin(pi*x) \ lim |-----------| x->4+| pi*x| |2*pi + ----| \ 2 /
Limit(sin(pi*x)/(2*pi + (pi*x)/2), x, 4)
/ sin(pi*x) \ lim |-----------| x->4+| pi*x| |2*pi + ----| \ 2 /
0
= 2.41093792633854e-31
/ sin(pi*x) \ lim |-----------| x->4-| pi*x| |2*pi + ----| \ 2 /
0
= -1.59427064430294e-31
= -1.59427064430294e-31