ax1x2的知识精选

已知x1,x2是函数f(x)=-3的两个零点,若a<x1<x2,则f(a)的值满足(  )A.f(...
问题详情:已知x1,x2是函数f(x)=-3的两个零点,若a<x1<x2,则f(a)的值满足()A.f(a)=0                            B.f(a)>0 C.f(a)<0                             D.f...
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