不等式1/(x-y)+1/(y-z)y>z,且1/(x-y)+1/(y-z)不等号右边a/z-x应为a/(z-x)
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不等式1/(x-y)+1/(y-z)y>z,且1/(x-y)+1/(y-z)不等号右边a/z-x应为a/(z-x)
不等式1/(x-y)+1/(y-z)y>z,且1/(x-y)+1/(y-z)
不等号右边a/z-x应为a/(z-x)
不等式1/(x-y)+1/(y-z)y>z,且1/(x-y)+1/(y-z)不等号右边a/z-x应为a/(z-x)
1/(x-y)+1/(y-z)=a
(y-x)/(y-z)+(z-y)/(x-y)-2>=a
-[(x-y)/(y-z)+(y-z)/(x-y)+2]
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已知x,y,z>0,求证:已知x,y,z>0,求证:(x+y+z)(1/(x+y)+1/(y+z)+1/(z+x))≥9/2 ,用均值不等式解答!
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