【简答题】设函数f(x)=log 2 (a x -b x ),且f(1)=1,f(2)=log 2 12 (1)求a,b的值. (2)当x∈[1,2]时,求f(x)的最大值. (3)p为何值时,函数g(x)=a x -b x +p与x轴有两个交点.
【判断题】混悬剂既属于热力学不稳定体系,也属于动力学不稳定体系。
【单选题】在电气控制回路当中,启动按钮在多地控制是( )联接。
【简答题】已知定义在R的函数 (a,b为实常数). (1)当a=b=1时,证明:f(x)不是奇函数; (2)设f(x)是奇函数,求a与b的值; (3)当f(x)是奇函数时,证明对任何实数x、c都有f(x)<c 2 ﹣3c+3成立.
【单选题】気持ちが 落ち着く 場所を 求めている 。
【判断题】混悬剂既属于热力学不稳定体系,也属于动力学不稳定体系。
【简答题】单词排队组句子。 1. meet, come, my, and, family (.) _______________________________________________________ 2. I, use, can, chopsticks (.) _______________________________________________________ 3. see, I, bo...
【单选题】设函数y=kx+1,当k取何值时,该函数为减函数?
【简答题】阅读理解。 Come and meet the family. This is a picture of my family. The man is my father. He is apoliceman. The woman is my mother. She is an English teacher. They have(有) a son and a daughter. The son is...
【简答题】单词排队组句子。 1. come, my, meet, and, family (.) __________________________________________________________ 2. they, drivers, are (?) __________________________________________________________ 3. like, a, ...