定义在非零实数集上的函数f(x)满足f(xy)=f(x)+f(y)且f(x)是区间(0,+∞)上的增函数求f(1),f(-1)的值;求证:f(-x)=f(x);解不等式f(2)+f(x-½)≤0
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![定义在非零实数集上的函数f(x)满足f(xy)=f(x)+f(y)且f(x)是区间(0,+∞)上的增函数求f(1),f(-1)的值;求证:f(-x)=f(x);解不等式f(2)+f(x-½)≤0](/uploads/image/z/2690483-59-3.jpg?t=%E5%AE%9A%E4%B9%89%E5%9C%A8%E9%9D%9E%E9%9B%B6%E5%AE%9E%E6%95%B0%E9%9B%86%E4%B8%8A%E7%9A%84%E5%87%BD%E6%95%B0f%28x%29%E6%BB%A1%E8%B6%B3f%28xy%29%3Df%28x%29%2Bf%28y%29%E4%B8%94f%28x%29%E6%98%AF%E5%8C%BA%E9%97%B4%EF%BC%880%2C%2B%E2%88%9E%EF%BC%89%E4%B8%8A%E7%9A%84%E5%A2%9E%E5%87%BD%E6%95%B0%E6%B1%82f%281%29%2Cf%28-1%29%E7%9A%84%E5%80%BC%EF%BC%9B%E6%B1%82%E8%AF%81%EF%BC%9Af%28-x%29%3Df%28x%29%EF%BC%9B%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8Ff%282%29%2Bf%28x-%26%23189%3B%29%E2%89%A40)
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