设函数f(x)=1/3x^3-1/2ax^2+(a^2-3)x+1.(1)若函数f(x)在R上是增函数,求实数a的取设函数f(x)=1/3x^3-1/2ax^2+(a^2-3)x+1.若函数f(x)的单调递减区间为(m,n),且{x I x

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设函数f(x)=1/3x^3-1/2ax^2+(a^2-3)x+1.(1)若函数f(x)在R上是增函数,求实数a的取
设函数f(x)=1/3x^3-1/2ax^2+(a^2-3)x+1.若函数f(x)的单调递减区间为(m,n),且{x I x