f(x)=cos^2x-2sinx
=1-(sinx)^2-2sinx
=-(sinx+1)^2+2
sinx=-1时 即X=3π/2+2kπ时 取最大值2
sinx=1时 即X=π/2+2kπ时 取最小值-2
求使函数f(x)=cos^2x-2sinx取得最小值、最大值的自变量x的值
求使函数f(x)=cos^2x-2sinx取得最小值、最大值的自变量x的值
其他人气:871 ℃时间:2019-09-12 03:25:27
优质解答
我来回答
类似推荐
猜你喜欢
- 1现有食盐水两种,一种含盐12%,另一种含盐20%,分别取这两种盐水多少千克,将其配成16%盐水100千克
- 2英文改错:in order to his dream,bill gates,richest man in the world,gave up studying in harvard...
- 3氢气和氧气比例多少才能燃烧
- 4he and she___each other since they were children,so nobody was surprised to hear they were married
- 5don"s grapes i are they like sour 怎么连词成句
- 6抛物线y2=4px(p>0)上一点M到焦点的距离为a,则M到y轴距离为( ) A.a-p B.a+p C.a−p2 D.a+2p
- 7甲乙两队修一条公路,甲修了全路的5分之2,乙修了剩下的3分之2,乙修了全路的几分之几
- 8用一个动滑轮将重为500N的货物提高2m,绳的拉力为300N,求有用功总功,机械效率
- 9一个直角梯形,上底与下底的比是9;4,如果把上底减少15厘米,就变成了一个正方形,这个正方形的面积与原梯形
- 10to后加动词ing的短语有哪些