证明方程x=sinx+1在(0,π)内至少有一个实根
证明方程x=sinx+1在(0,π)内至少有一个实根
数学人气:119 ℃时间:2019-10-29 06:26:18
优质解答
令f(x)=x-sinx-1,显然f(x)在[0,π]内连续.而f(0)=-1<0,f(3π/2)=3π/2-1-0.5*根号2>0,可见在(0,3π/2)内必然存在一个x=a,使f(a)=0.
我来回答
类似推荐
猜你喜欢
- 1谁能跟我讲一下He is taller than any other boy.和He is taller than any boy的区别
- 2日平均气温降到10度以下是什么季开始
- 3鸡和兔共有50只,鸡的腿数比兔的腿数多40条.鸡和兔各有多少只? 要有具体方程,或者算式.
- 4Have you read a book called Waiting for anya?-Who()it.A writes B wrote C has written D had written
- 5弹簧原长12厘米,每挂1千克重物伸长0.5厘米,且所挂重物最多不能超过20千克.设弹簧的长度是ycm,挂重物xkg,则y与x的函数关系式是_.
- 6如图所示,用150N的力作用下将重为60N的物体压在竖直的墙壁上
- 7将下列二次函数配方①y=-2x²+4x
- 8七尺男儿是多长?尺,厘米,寸如何换算?
- 9为什么动态电阻不能用万用表测量?
- 10What does "like father ,like son"mean in Chinese?