曲线y=(2x-1)e 1/x的斜渐近线方程为_.
问题描述:
曲线y=(2x-1)e
的斜渐近线方程为______. 1 x
答
∵
lim x→∞
=f(x) x
lim x→∞
•e2x−1 x
=21 x
[y−2x]=lim x→∞
[2x(elim x→∞
−1)−e1 x
]=1 x
[lim x→∞
−e2(e
−1)1 x
1 x
]=21 x
lim x→∞
−1=1
1 x
1 x
∴y的斜渐近线方程为:y=2x+1