> 数学 >
求代数式y=(x+2)/(1+√(1-x²))+(1-√(1-x²))/x的最大值和最小值
人气:360 ℃ 时间:2019-08-19 21:24:58
解答
由y=(x+2)/[1+√(1-x²)]+[1-√(1-x²)]/x,由-1<x<1,设x=sint,-π/2<t<π/2y=(sinx+2)/(1+cost)+(1-cost)/sint=(sin²t+2sint+1-cos²t)/sint(1+cost)=(2sint+2)/(1+cost)(1)当t=-...
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版