/7 + x \ lim cos|------| x->3+ | 2| \5 + x /
Limit(cos((7 + x)/(5 + x^2)), x, 3)
cos(5/7)
= 0.755561346700697
/7 + x \ lim cos|------| x->3- | 2| \5 + x /
0.755561346700697