2个回答
展开全部
x->0
α(x)=kx^2
β(x)=√(1+x.arcsinx) - √cosx
x->0
√(1+x.arcsinx)
=√[1+x^2+o(x^2)]
=1+ (1/2)x^2 +o(x^2)
cosx = 1- (1/2)x^2 +o(x^2)
√cosx
=√[1- (1/2)x^2 +o(x^2)]
= 1- (1/4)x^2 +o(x^2)
√(1+x.arcsinx) -√cosx
=[1+ (1/2)x^2 +o(x^2)] -[1- (1/4)x^2 +o(x^2)]
=(3/4)x^2 +o(x^2)
=>
k =3/4
α(x)=kx^2
β(x)=√(1+x.arcsinx) - √cosx
x->0
√(1+x.arcsinx)
=√[1+x^2+o(x^2)]
=1+ (1/2)x^2 +o(x^2)
cosx = 1- (1/2)x^2 +o(x^2)
√cosx
=√[1- (1/2)x^2 +o(x^2)]
= 1- (1/4)x^2 +o(x^2)
√(1+x.arcsinx) -√cosx
=[1+ (1/2)x^2 +o(x^2)] -[1- (1/4)x^2 +o(x^2)]
=(3/4)x^2 +o(x^2)
=>
k =3/4
本回答被网友采纳
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