回答: y = 2x-3 说明: 使用多项式长除法: 从而 #压裂{2×^ 2 + 3×8 +} {X + 3} = 2X-3 + 压裂{17} {X + 3}# # lim_ {x to infty} 2x-3 + frac {17} {x + 3} = 2x-3# # lim_ {x to - infty} 2x-3 + frac {17} {x + 3} = 2x-3# 因此渐近渐近线就是 #y = 2x-3#