/ 2 -28 + 3*x\ lim |x - ---------| x->7+\ -7 + x /
Limit(x^2 - (-28 + 3*x)/(-7 + x), x, 7)
/ 2 -28 + 3*x\ lim |x - ---------| x->7+\ -7 + x /
oo
= 1103.09275908951
/ 2 -28 + 3*x\ lim |x - ---------| x->7-\ -7 + x /
-oo
= -1011.09267137406
= -1011.09267137406