已知a,b是实数,1和-1是函数f(x)=x∧3ax∧2+bx的两个极值点.1.求a和b的值 2已知a,b是实数,1和-1是函数f(x)=x∧3ax∧2+bx的两个极值点.1.求a和b的值2.当x∈[-3,3]时,求f(x)最小值
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