/ sin(2*x)\ lim |---------| pi \-pi + 4*x/ x->--+ 4
Limit(sin(2*x)/(-pi + 4*x), x, pi/4)
/ sin(2*x)\ lim |---------| pi \-pi + 4*x/ x->--+ 4
oo
= 37.7466887901298
/ sin(2*x)\ lim |---------| pi \-pi + 4*x/ x->--- 4
-oo
= -37.7466887901295
= -37.7466887901295