问题描述:
若函数y=f(x)在[a,b]上是单调函数,则使得y=f(x+3)必为单调函数的区间是( )
A. [a-3,b-3]
B. [a+3,b+3]
C. [a,b+3]
D. [a+3,b]
A. [a-3,b-3]
B. [a+3,b+3]
C. [a,b+3]
D. [a+3,b]
问题解答:
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