Problem Solving

试题详情

题目:

If f is the function defined for all k by f(k) = a5/16, what is f(2k) in terms of f(k)?

选项:

A、1/8 f(k)
B、5/8 f(k)
C、2 f(k)
D、10 f(k)
E、32 f(k)

答案:

E

提问:

希望老师讲解一下
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