高数题。。急求大神帮忙解答下啊!!有图片!!

2025-04-08 13:08:09
推荐回答(1个)
回答1:

=lim 1/(cosx^2)*lim sin3x/(e^x-1)
x->0
=1*lim sin3x/(e^x-1)
等价无穷小
sin3x~3x
e^x-1~x
=lim 3x/(1*x)
=3