/ ___ \ lim \\/ x - cos(x)/ x->0+
Limit(sqrt(x) - cos(x), x, 0)
-1
= -0.986051251530034
/ ___ \ lim \\/ x - cos(x)/ x->0-
= (-0.999981347716463 + 0.0139180821137096j)
-0.986051251530034