/sin(2*x)\ lim |--------| x->-pi+| pi | | x - -- | \ 2 /
Limit(sin(2*x)/(x - pi/2), x, -pi)
/sin(2*x)\ lim |--------| x->-pi+| pi | | x - -- | \ 2 /
0
= -5.19756244335917e-17
/sin(2*x)\ lim |--------| x->-pi-| pi | | x - -- | \ 2 /
0
= -5.19756244335917e-17
= -5.19756244335917e-17