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        1. (1)當(dāng)b>0時(shí).若對(duì)任意x∈R都有f(x)≤1.證明a≤2, 查看更多

           

          題目列表(包括答案和解析)

          已知a>0,函數(shù)f(x)=ax-bx2,

          (1)當(dāng)b>0時(shí),若對(duì)任意x∈R都有f(x)≤1,證明a≤2b;

          (2)當(dāng)b>1時(shí),證明對(duì)任意x∈[0,1],|f(x)|≤1的充要條件是b-1≤a≤2.

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          已知a>0,函數(shù)f(x)=ax-bx2.

          (1)當(dāng)b>0時(shí),若對(duì)任意x∈R都有f(x)≤1,證明a≤2;

          (2)當(dāng)b>1時(shí),證明對(duì)任意x∈[0,1],|f(x)|≤1的充要條件是b-1≤a≤2.

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          已知a>0,函數(shù)f(x)=ax-bx2.?

          (1)當(dāng)b>0時(shí),若對(duì)任意x∈R都有f(x)≤1,證明a≤2;??

          (2)當(dāng)b>1時(shí),證明對(duì)任意x∈[0,1],|f(x)|≤1的充要條件是b-1≤a≤2;?

          (3)當(dāng)0<b≤1時(shí),討論對(duì)任意x∈[0,1],|f(x)|≤1的充要條件.

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          己知a>0,函數(shù)f(x)=ax-bx2,

          (1)當(dāng)b>0時(shí),若對(duì)任意x∈R都有f(x)≤1,證明:a≤2

          (2)當(dāng)b>1時(shí),證明:對(duì)任意x∈[0,1],|f(x) ≤1的充要條件是b-1≤a≤

          (3)當(dāng)0<b≤1時(shí),討論:對(duì)任意x∈[0,1],|f(x) ≤1的充要條件.

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          已知a>0,函數(shù)f(x)=ax-bx2

          (1)當(dāng)b>0時(shí),若對(duì)任意x∈R都有f(x)≤1,證明a≤

          (2)當(dāng)b>1時(shí),證明對(duì)任意x∈[0,1],|f(x)|≤1的充要條件是b-1≤a≤

          查看答案和解析>>


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