16.曲线 =(e)^dfrac (1{{x)^2}}arctan dfrac ({x)^2+x+1}((x-1)(x+2)) 的渐近线条数为 ()-|||-A.1 B.2 C.3 D.4

8.曲线 =dfrac ({x)^3+x-2}({x)^2-1}(e)^dfrac (1{x)} 的渐近线条数为 ()-|||-(A)1 (B)2 (C)3

曲线=dfrac (2{x)^2-x-1}({x)^2-1}(e)^dfrac (1{x)}的渐近线的条数有( )A) 1 B) 2C) 3D) 4曲线的渐近

[题目]-|||-曲线 (x)=dfrac ({x)^2+x}({x)^2-1} 渐近线的条数为 ()-|||-(A)0 (B)1 (C)2 (D)3

设函数 (x)=(e)^dfrac (1{x-1)}dfrac (ln |x+2|)({x)^2+x-6}求(x)=(e)^dfrac (1{x-1)}dfra

曲线=dfrac (x(x-1))(x(x-1)(x-2))的渐近线共有（ ）曲线的渐近线共有（ ）A.1条B.2条C.3条D.4条

曲线=dfrac (1)({x)^3}+arctan x的水平与铅直渐近线的条数总共有A.1条B.2条C.4条D.3条曲线的水平与铅直渐近线的条数总共有A.1条

2 , 1 B . 1 , 2 C . (x)=dfrac ({e)^x-1}(x), 1D . (x)=dfrac ({e)^x-1}(x), 2设函数，若当

10.曲线 =dfrac ({x)^2+x}({x)^2-1} 的渐近线的条数为 () .-|||-(A) 0 (B)1 (C)2 (D) 3

4.求下列函数所表示曲线的渐近线:-|||-(1) =dfrac (1)(x) ;-|||-(2) =arctan x;-|||-(3) =dfrac (3{x

16.曲线 =dfrac (arctan x)(x(x-2)) 的垂直渐近线为-|||-