试题与答案

已知定义在实数集上的偶函数y=f(x)在区间(0,+∞)上是增函数,那么y1=f

题型:选择题

题目:

已知定义在实数集上的偶函数y=f(x)在区间(0,+∞)上是增函数,那么y1=f(
π
3
)
y2=f(3x2+1)y3=f(log2
1
4
)
之间的大小关系为(  )
A.y1<y3<y2B.y1<y2<y3C.y3<y1<y2D.y3<y2<y1

答案:

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