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设f(x)在[a, b]上具有连续的导数,a<b, 且f(a)=0,证明:当x∈[a,b]时,有|f(x)|≤

设f(x)在[a, b]上具有连续的导数,a<b, 且f(a)=0,证明:当x∈[a,b]时,有|f(x)|≤


【正确答案】:
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