/ 2 \ lim |- - + 2*x| x->-1+\ x /
Limit(-2/x + 2*x, x, -1)
0
= 1.71127871947268e-32
/ 2 \ lim |- - + 2*x| x->-1-\ x /
= -1.46880684889269e-28
1.71127871947268e-32