求这个极限 求过程
4个回答
展开全部
let
y=π/2-x
lim(x->π/2) ( sinx-1) tanx
=lim(y->0) ( cosy-1) coty
=lim(y->0) ( cosy-1)/tany
=lim(y->0) -(1/2)y^2/y
=0
y=π/2-x
lim(x->π/2) ( sinx-1) tanx
=lim(y->0) ( cosy-1) coty
=lim(y->0) ( cosy-1)/tany
=lim(y->0) -(1/2)y^2/y
=0
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询