当X趋于0时(cot x)^sinx的极限怎么求?

2024-11-18 13:44:19
推荐回答(2个)
回答1:

运用罗必达方法,解答如下,点击放大:

回答2:

lim(cot x)^sinx
=e^limsinxlncotx
=e^limlncotx/(1/sinx)
=e^lim[sinx/cos^2 x]
=e^0
=1

OR
=lim(1/tanx)^sinx
=1/limx^x (x~tanx`sinx)
=1/e^lim[lnx/(1/x)]
=1/e^[(1/x)/(-1/x^2)]=1/e^0=1