【简答题】(12分)已知 是定义在R上的函数,对于任意的 , ,且当 时, . (1)求 的解析式; (2)画出函数 的图象,并指出 的单调区间及在每个区间上的增减性; (3)若函数 f ( x )在区间[-1, a -2]上单调递增,试确定 a 的取值范围.
【简答题】完型填空 (每小题1分,共20分) My parents made me know the ideas of family, faith and patriotism (爱国主义) when I was young. 26 we lived a hard life, they 27 great importance to us realize how 28 we were ...
【简答题】(本小题满分12分) 已知 在定义域上为减函数,且其导函数 存在零点。 (I)求实数a的值; (II)函数 的图象与函数 的图象关于直线y=x对称,且 为函数 的导函数, 是函数 图像上两点,若 ,判断 的大小,并证明你的结论。[
【单选题】The title that can best express the ideas of the passage is ______.
B.
How Babies Learn Language
C.
The Function of Communication between Children and Parents
D.
How to Teach Your Baby to Learn Languages
【简答题】Culture itself must be transmitted, and the most effective way is through the family. Parents teach their children the ideas and traditions they obtained from their own parents. For this reason the fa...
【判断题】三相交流异步电动机的温升随负载变化而变化。 ()
【单选题】在平静呼吸过程中,肺内压为正压的时期是( )
【单选题】Times have changed and the ideas of the young and the old about the same thing are often ill contra diction. For example, parents and teenagers often disagree about the amount of freedom and responsib...
【单选题】小李毎天坚持用 “微信运动”来统计当天行走的步数, 图 2-2 为她在 4 月 12 日的步行情况。按照正常成年人的身体指标和通常的步伐及频率进行估测,以下合理的是 ( )