摘要:11.已知函数y=f(x)是偶函数.当x>0时.有.且当x∈[-3,-1].f(x)的值域是[n,m].则m-n的值是 ( ) A. B. C.1 D.
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| A、2x | ||
B、log
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| C、log2(-x) | ||
| D、-log2(-x) |
已知函数y=f(x)是偶函数,且y=f(x-2)在[0,2]上是单调减函数,则( )
A.f(0)<f(-1)<f(2) B.f(-1)<f(0)<f(2)
C.f(-1)<f(2)<f(0) D.f(2)<f(-1)<f(0)
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