f(a)>f(a-1)+2,则实数知函数f(x)是定义在(0,正无穷)上的增函数,且满足f(xy)=f(x)+f(y),若f(3)=1,且a的知函数f(x)是定义在(0,正无穷)上的增函数,且满足f(xy)=f(x)+f(y),若f(3)=1,且f(xy)=f(x)+f(y),若f(3)=1,且a的取
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![f(a)>f(a-1)+2,则实数知函数f(x)是定义在(0,正无穷)上的增函数,且满足f(xy)=f(x)+f(y),若f(3)=1,且a的知函数f(x)是定义在(0,正无穷)上的增函数,且满足f(xy)=f(x)+f(y),若f(3)=1,且f(xy)=f(x)+f(y),若f(3)=1,且a的取](/uploads/image/z/10332714-66-4.jpg?t=f%28a%29%26gt%3Bf%28a-1%29%2B2%2C%E5%88%99%E5%AE%9E%E6%95%B0%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%E6%98%AF%E5%AE%9A%E4%B9%89%E5%9C%A8%280%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%29%E4%B8%8A%E7%9A%84%E5%A2%9E%E5%87%BD%E6%95%B0%2C%E4%B8%94%E6%BB%A1%E8%B6%B3f%28xy%29%3Df%28x%29%2Bf%28y%29%2C%E8%8B%A5f%283%29%3D1%2C%E4%B8%94a%E7%9A%84%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%E6%98%AF%E5%AE%9A%E4%B9%89%E5%9C%A8%280%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%29%E4%B8%8A%E7%9A%84%E5%A2%9E%E5%87%BD%E6%95%B0%2C%E4%B8%94%E6%BB%A1%E8%B6%B3f%28xy%29%3Df%28x%29%2Bf%28y%29%2C%E8%8B%A5f%283%29%3D1%2C%E4%B8%94f%28xy%29%3Df%28x%29%2Bf%28y%29%2C%E8%8B%A5f%283%29%3D1%2C%E4%B8%94a%E7%9A%84%E5%8F%96)
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