/1\ lim cos|-| x->oo \x/
Limit(cos(1/x), x, oo, dir='-')
1
/1\ lim cos|-| x->0+ \x/
<-1, 1>
= -1.83036708622755e-76
/1\ lim cos|-| x->0- \x/
-1.83036708622755e-76