已知f(x)是定义在R上的奇函数,且f(x)在区间(-∞,0)上是增函数,f(2a^2+a+1)+f(2a-3a^2-1)>0求a范围已知f(x)是定义在R上的奇函数,且f(x)在区间(-∞,0)上是增函数,f(2a^2+a+1)+f(2a-3a^2-1)>0,求a的
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![已知f(x)是定义在R上的奇函数,且f(x)在区间(-∞,0)上是增函数,f(2a^2+a+1)+f(2a-3a^2-1)>0求a范围已知f(x)是定义在R上的奇函数,且f(x)在区间(-∞,0)上是增函数,f(2a^2+a+1)+f(2a-3a^2-1)>0,求a的](/uploads/image/z/10292264-8-4.jpg?t=%E5%B7%B2%E7%9F%A5f%28x%29%E6%98%AF%E5%AE%9A%E4%B9%89%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%A5%87%E5%87%BD%E6%95%B0%2C%E4%B8%94f%28x%29%E5%9C%A8%E5%8C%BA%E9%97%B4%EF%BC%88-%E2%88%9E%2C0%EF%BC%89%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0%2Cf%EF%BC%882a%5E2%2Ba%2B1%EF%BC%89%2Bf%282a-3a%5E2-1%29%EF%BC%9E0%E6%B1%82a%E8%8C%83%E5%9B%B4%E5%B7%B2%E7%9F%A5f%28x%29%E6%98%AF%E5%AE%9A%E4%B9%89%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%A5%87%E5%87%BD%E6%95%B0%2C%E4%B8%94f%28x%29%E5%9C%A8%E5%8C%BA%E9%97%B4%EF%BC%88-%E2%88%9E%2C0%EF%BC%89%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0%2Cf%EF%BC%882a%5E2%2Ba%2B1%EF%BC%89%2Bf%282a-3a%5E2-1%29%EF%BC%9E0%2C%E6%B1%82a%E7%9A%84)
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