已知实数a,b满足a>b,求证:-a^2-a<-b^3-b
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已知实数a,b满足a>b,求证:-a^2-a<-b^3-b已知实数a,b满足a>b,求证:-a^2-a<-b^3-b已知实数a,b满足a>b,求证:-a^2-a<-b^3-ba^2应该是a^3才对证明
已知实数a,b满足a>b,求证:-a^2-a<-b^3-b
已知实数a,b满足a>b,求证:-a^2-a<-b^3-b
已知实数a,b满足a>b,求证:-a^2-a<-b^3-b
a^2应该是a^3才对
证明:
设函数f(x)=-x^3-x
求导:f'(x)=-3x^2-1b
所以:f(a)
应该是a^3吧
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