解 (Ⅰ)∵點(diǎn)P(2.2)在反比例函數(shù)的圖象上. ∴．即． ···································································································· 2分 ∴反比例函數(shù)的解析式為． ∴當(dāng)時.． ···························································································· 4分 (Ⅱ)∵當(dāng)時.,當(dāng)時.. ····················································· 6分 又反比例函數(shù)在時值隨值的增大而減小. ············································· 7分 ∴當(dāng)時.的取值范圍為．································································ 8分 【查看更多】

 

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在反比例函數(shù)的圖象上有一點(diǎn)P（x，y），過P點(diǎn)作PA⊥x軸于A點(diǎn)，PB⊥y軸于B點(diǎn)，且矩形AOBP的面積為4，則該反比例函數(shù)的解析式為    ．

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在反比例函數(shù)數(shù)學(xué)公式的圖象上有一點(diǎn)P（x，y），過P點(diǎn)作PA⊥x軸于A點(diǎn)，PB⊥y軸于B點(diǎn)，且矩形AOBP的面積為4，則該反比例函數(shù)的解析式為________．

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若，點(diǎn)M在反比例函數(shù)的圖象上，則反比例函數(shù)的解析式為（   ）

A．B．C．D．

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若，點(diǎn)M在反比例函數(shù)的圖象上，則反比例函數(shù)的解析式為（   ）

A．         B．          C．           D．

 

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若，點(diǎn)M在反比例函數(shù)的圖象上，則反比例函數(shù)的解析式為（   ）
A．B．C．D．

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