题目内容
已知函数f(x)=3x2+mx+2在区间[1,+∞)上是增函数,则f(2)的取值范围是________.
设偶函数f(x)的定义域为R,当x时f(x)是增函数,则f(-2),f(),f(-3)的大小关系是:( )
A.f()>f(-3)>f(-2) B.f()>f(-2)>f(-3)
C.f()<f(-3)<f(-2) D.f()<f(-2)<f(-3)
设偶函数f(x)的定义域为R,当x时f(x)是增函数,则f(-2),f(),f(-3)的大小关系是( )
(A)f()>f(-3)>f(-2) (B)f()>f(-2)>f(-3)
(C)f()<f(-3)<f(-2) (D)f()<f(-2)<f(-3)