当x趋向0时,怎么求lim( sin2x⼀tan5x)的极限

2024-11-28 18:53:20
推荐回答(1个)
回答(1):

lim(sin2x/tan5x)
=lim(((sin2x/2x)*cos5x/(sin5x/5x))*(2x/5x))
=1*1/1*2/5
=2/5