函数f（x）=xlnx（x＞0）的单调递减区间为______． 发布时间：2017-04-23 14:33 │ 来源：www.tikuol.com 题型：填空题 问题： 函数f（x）=xlnx（x＞0）的单调递减区间为______．
题型：填空题 阅读理解。 Do you like reading? Do you often go to the library? Do you know the rules in the library? Here aresome rules for you to follow in the library.★Keep books clean.★Give back books on time. ★Don't use other people's library cards★Don't bring any food or drink.★Keep quiet.★Borrow (借) two books a time.★Don't bring your backpack.★Don't break (损坏) the books, or pay for them. These rules are good for readers. Remember them and don't break them. You know the library is our own library. Rules for libraryYou mustkeep (1)______ in the library.Keep the books(2)______ and give them back on time.You can borrow(3)______ books a time.When you come to the library,you can't take your (4)______ food or drink.You can't use(5)______ ______ library cards.If you break the books,you have to pay for them. 查看答案