题型：名词解释 已知定义域为（-∞，0）∪（0，+∞）的函数y=f（x）满足条件：对于定义域内任意x1，x2都有f（x1x2）=f（x1）+f（x2）．（1）求证：f(1x)=-f(x)，且f（x）是偶函数；（2）请写出一个满足上述条件的函数． 查看答案
题型：名词解释 从B栏中找出A栏的答语，并将其字母代号填入问句前的括号里。 A ( ) 1. What colour is it? ( ) 2. How many books do you have? ( ) 3. May I have a look? ( ) 4. Who's he? ( ) 5. Is he strong? B A. He is my friend. B. Yes, he is. C. It's red. D. Sure. Here you are. E. Seven. 查看答案