.f(x)是在R上的奇函数,且在区间(负无穷大到0)上是增函数,f(2)=0则不等式x*f(x)>0的解f(x)是在R上的奇函数,且在区间(负无穷大到0)上是增函数,f(2)=0则不等式x*f(x)>0的解一次函数f(x)是减函数,且f[f(x)]
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![.f(x)是在R上的奇函数,且在区间(负无穷大到0)上是增函数,f(2)=0则不等式x*f(x)>0的解f(x)是在R上的奇函数,且在区间(负无穷大到0)上是增函数,f(2)=0则不等式x*f(x)>0的解一次函数f(x)是减函数,且f[f(x)]](/uploads/image/z/3857357-29-7.jpg?t=.f%28x%29%E6%98%AF%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%A5%87%E5%87%BD%E6%95%B0%2C%E4%B8%94%E5%9C%A8%E5%8C%BA%E9%97%B4%28%E8%B4%9F%E6%97%A0%E7%A9%B7%E5%A4%A7%E5%88%B00%29%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0%2Cf%282%29%3D0%E5%88%99%E4%B8%8D%E7%AD%89%E5%BC%8Fx%2Af%28x%29%3E0%E7%9A%84%E8%A7%A3f%28x%29%E6%98%AF%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%A5%87%E5%87%BD%E6%95%B0%2C%E4%B8%94%E5%9C%A8%E5%8C%BA%E9%97%B4%28%E8%B4%9F%E6%97%A0%E7%A9%B7%E5%A4%A7%E5%88%B00%29%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0%2Cf%282%29%3D0%E5%88%99%E4%B8%8D%E7%AD%89%E5%BC%8Fx%2Af%28x%29%3E0%E7%9A%84%E8%A7%A3%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0f%28x%29%E6%98%AF%E5%87%8F%E5%87%BD%E6%95%B0%2C%E4%B8%94f%5Bf%28x%29%5D)
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