/ 2 \ lim atan|----------| x->3+ | 2 | \- x + 3*x/
Limit(atan(2/(-x^2 + 3*x)), x, 3)
/ 2 \ lim atan|----------| x->3+ | 2 | \- x + 3*x/
-pi ---- 2
= -1.5707963267949
/ 2 \ lim atan|----------| x->3- | 2 | \- x + 3*x/
pi -- 2
= 1.5707963267949
= 1.5707963267949