数学题※救我1.函数f(x)对于任意实数x满足条件f(x+2)=1/f(x).若f(1)=-5,求f〔f(5)〕的值.2.已知函数f(x)的定义域是x>0,且f(xy)=f(x)+5*f(x/y),y不等于1.若f(9)=8,求f(3)的值.
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![数学题※救我1.函数f(x)对于任意实数x满足条件f(x+2)=1/f(x).若f(1)=-5,求f〔f(5)〕的值.2.已知函数f(x)的定义域是x>0,且f(xy)=f(x)+5*f(x/y),y不等于1.若f(9)=8,求f(3)的值.](/uploads/image/z/3693781-37-1.jpg?t=%E6%95%B0%E5%AD%A6%E9%A2%98%E2%80%BB%E6%95%91%E6%88%911.%E5%87%BD%E6%95%B0f%28x%29%E5%AF%B9%E4%BA%8E%E4%BB%BB%E6%84%8F%E5%AE%9E%E6%95%B0x%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6f%28x%2B2%29%3D1%2Ff%28x%29.%E8%8B%A5f%281%29%3D-5%2C%E6%B1%82f%E3%80%94f%285%29%E3%80%95%E7%9A%84%E5%80%BC.2.%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E6%98%AFx%3E0%2C%E4%B8%94f%28xy%29%3Df%28x%29%2B5%2Af%28x%2Fy%29%2Cy%E4%B8%8D%E7%AD%89%E4%BA%8E1.%E8%8B%A5f%289%29%3D8%2C%E6%B1%82f%283%29%E7%9A%84%E5%80%BC.)
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