The teacher has repeatedly reminded him( )it.of

The teacher has repeatedly reminded him( )it.of

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Susan put a value of a thousand dollars( )the necklace.on

Susan put a value of a thousand dollars( )the necklace.on

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She was so unhappy that she was( )the verge of committing suicide.on

She was so unhappy that she was( )the verge of committing suicide.on

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A stream issued( )the bottom of the hill.from

A stream issued( )the bottom of the hill.from

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设(x)在区间[0,2]上具有一阶连续导数,且(0)=(2)=0,。证明:(Ⅰ)存在ξ∈(0,2,)使得|′(ξ)|≥M;(Ⅱ)若对任意x∈(0,2),|′(x

设(x)在区间[0,2]上具有一阶连续导数,且(0)=(2)=0,。证明:(Ⅰ)存在ξ∈(0,2,)使得|′(ξ)|≥M;(Ⅱ)若对任意x∈(0,2),|′(x)|≤M,则M=0。

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