设函数y=f(x)在R内有定义,对于给定的正数K,定义函数 ,取函数f(x)=2 -|x| ,当K= 时,函数f K (x)的单调递减区间为 [ ]
A.
(-∞,0)
B.
(0,+∞)
C.
(-∞,-1)
D.
(1,+∞)
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【判断题】Rio Declaration on Environment and Development during UN Earth Summit in 1992 consists of 27 principles intended to guide countries in future sustainable development, which has been signed by over 170...
【单选题】Some things are doomed to remain imperfect, the United Nations among them. De spite noble aspirations, the organization that more than any other embodies the collective will and wisdom of an imperfect...
【简答题】Up to December 2013, among the over 800 World Heritage Sites listed by UNESCO, China has ______ listed, only second to Italy. Among them 31 are cultural heritages, 10 natural heritages, and _______du...