/log(cos(x))\ lim |-----------| x->oo\ x /
Limit(log(cos(x))/x, x, oo, dir='-')
/log(cos(x))\ lim |-----------| x->0+\ x /
0
= -2.54155882587787e-31
/log(cos(x))\ lim |-----------| x->0-\ x /
= 2.54155882587787e-31
-2.54155882587787e-31