有關f06的精選大全

已知函數f(x)=x2-cosx,則f(0.6),f(0),f(-0.5)的大小關係是(  )A.f(0)&l...
問題詳情:已知函數f(x)=x2-cosx,則f(0.6),f(0),f(-0.5)的大小關係是()A.f(0)<f(0.6)<f(-0.5)B.f(0)<f(-0.5)<f(0.6)C.f(0.6)<f(-0.5)<f(0)D.f(-0.5)<f(0)<f(0.6)【回答】B解析因為函數f(x)=x2-cosx是偶函數,且在(0,π)上是增函數,所以f(0)...
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