设函数f(x)=-1/3x^3+x^2+(m^2-1)x (x∈R),其中m>0(2).求函数f(x)的单调区间和极值.
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![设函数f(x)=-1/3x^3+x^2+(m^2-1)x (x∈R),其中m>0(2).求函数f(x)的单调区间和极值.](/uploads/image/z/3771371-11-1.jpg?t=%E8%AE%BE%E5%87%BD%E6%95%B0f%28x%29%3D-1%2F3x%5E3%2Bx%5E2%2B%28m%5E2-1%29x+%28x%E2%88%88R%29%2C%E5%85%B6%E4%B8%ADm%3E0%EF%BC%882%EF%BC%89.%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E5%8D%95%E8%B0%83%E5%8C%BA%E9%97%B4%E5%92%8C%E6%9E%81%E5%80%BC.)
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