/sin(-2 + x)\ lim |-----------| x->oo\ -2 + x /
Limit(sin(-2 + x)/(-2 + x), x, oo, dir='-')
/sin(-2 + x)\ lim |-----------| x->2+\ -2 + x /
1
= 1.0
/sin(-2 + x)\ lim |-----------| x->2-\ -2 + x /
0
1.0