1 ----- 1 + x / x \ lim |-------| x->-1+\1 + 2*x/
Limit((x/(1 + 2*x))^(1/(1 + x)), x, -1)
E
1 ----- 1 + x / x \ lim |-------| x->-1-\1 + 2*x/
= 2.71828182845905