【简答题】用括号中所给词的适当形式填空。 1. He is going ______ (see) a Jackie Chan's film. 2. Would you like ______ (play) football? 3. It's raining outside. Let's ______ (stay) at home. 4. My friends ask me ______ (go) to a ...
【简答题】设向量 , ,其中 ,由不等式 恒成立,可以证明(柯西)不等式 (当且仅当 ∥ ,即 时等号成立),己知 ,若 恒成立,利用可西不等式可求得实数 的取值范围是
【简答题】阅读短文,用括号中所给词的适当形式填空。 Mr. Gao lives in a town. When he 1 (be) twenty-five, his son was born (出生). He called him Gao Ling. The little boy is very clever and his parents 2 (love) him very much. It's Sept...
【单选题】设函数 ,且 恒成立,则对 ,下面不等式恒成立的是( )
【简答题】不等式 恒成立,则 a 的取值范围是 。
【简答题】用括号中所给词的适当形式填空,每空一词。 1. What kind of _________ (west) food do you like best? 2. He has a cold and he feels _________ (bad) today than yesterday. 3. Please brush your _________ (tooth) three times ever...