/ 1\ | -| | x| lim \-e / x->0+
Limit(-exp(1/x), x, 0)
-oo
= 3.6866953016766e-75
/ 1\ | -| | x| lim \-e / x->0-
0
= 1.43738767003715e-78
3.6866953016766e-75