题目
5.设f(x)的定义域为[0,1],则函数f(x+(1)/(4))+f(x-(1)/(4))的定义域是（）A. [0,1]B. [-(1)/(4),(5)/(4)]C. [-(1)/(4),(1)/(4)]D. [(1)/(4),(3)/(4)]
5.设f(x)的定义域为[0,1],则函数$f(x+\frac{1}{4})+f(x-\frac{1}{4})$的定义域是（）
A. [0,1]
B. $[-\frac{1}{4},\frac{5}{4}]$
C. $[-\frac{1}{4},\frac{1}{4}]$
D. $[\frac{1}{4},\frac{3}{4}]$
题目解答
答案
D. $[\frac{1}{4},\frac{3}{4}]$