/ / -2*x\\ lim \x*\-1 + E // x->0+
Limit(x*(-1 + E^(-2*x)), x, 0)
0
= 1.00936920372709e-29
/ / -2*x\\ lim \x*\-1 + E // x->0-
= 1.16109019174246e-32
1.00936920372709e-29