題目列表(包括答案和解析)
(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.
(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.
(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.
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.
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≤.
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