________ lim \/ cos(x) pi x->--+ 2
Limit(sqrt(cos(x)), x, pi/2)
0
= (0.0 + 0.0140389650710621j)
________ lim \/ cos(x) pi x->--- 2
= 0.0140390712358667
(0.0 + 0.0140389650710621j)