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标题: GWD3-18 [打印本页]

作者: yuyanhan    时间: 2005-5-28 13:49     标题: GWD3-18

Q18:

The function f is defined by f(x) = √x – 10 for all positive numbers x. If u = f(t) for some positive numbers t and u. What is t in terms of u?

A. √(u+10)

B. (√u + 10)2

C. √(u2+10)

D. (u + 10)2

E. (u2 + 10)2

答案是D,不明白哎


作者: yuyanhan    时间: 2005-5-29 12:13

对啊,天啊,我是越做越傻了,呵呵
作者: Duke2007    时间: 2005-5-29 23:46

呵呵,考试时候不犯晕,就OK了






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