1已知函数.f(x)=3ax^4-2(3a+1)x^2+4x当a=1/6时,求f(x)的极值2.设函数f(x)=a^2lnx-x^2+ax,a>0求f(x)单调区间
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![1已知函数.f(x)=3ax^4-2(3a+1)x^2+4x当a=1/6时,求f(x)的极值2.设函数f(x)=a^2lnx-x^2+ax,a>0求f(x)单调区间](/uploads/image/z/10170265-49-5.jpg?t=1%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0.f%28x%29%3D3ax%5E4-2%283a%2B1%29x%5E2%2B4x%E5%BD%93a%3D1%2F6%E6%97%B6%2C%E6%B1%82f%28x%29%E7%9A%84%E6%9E%81%E5%80%BC2.%E8%AE%BE%E5%87%BD%E6%95%B0f%28x%29%3Da%5E2lnx-x%5E2%2Bax%2Ca%3E0%E6%B1%82f%28x%29%E5%8D%95%E8%B0%83%E5%8C%BA%E9%97%B4)
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