tanx的绝对值的图像

润之怎么解释 有关数学用语的英文 “百年不润”是什么意思 已知关于x的不等式组x>2 x 已知不等式组x-k≧0,6-5x≧x-1的整数解有五个,求k的取值范围说明理由 What were you doing when it started raining 谁先回答要谁的！ What were you doing when the UFO arrived?是个什么时态的什么句子?有主从句的事态要求么? what were you doing when the ufo arrived 作文这个题目写一篇作文 分不多 希望大虾们来帮忙啊 what were you doing when he arrived为什么是 when 不是while when 和while 后面跟什么时态 英语 We send him a card with Christmas g_____ 首字母填空 Can you send a photo for me?和can you send me a card哪个对说明理由（我感觉都对） please send me a card译文 说法正确的是( )a.在6与7之间的小数有无数个b.10个十分之一是百分之一c.小数的位数越多,这个小数就越大 Please Send Me a Card 这篇英语短文该怎么背 i wan to send a christmas card to my best friend.和i want to give my best friend sent a Christmas card两句都对吗 明朝的内阁与英国的内阁有何区别 概括明朝内阁制与英国内阁制的异同 中国明朝的内阁至和18世纪英国的内阁制各有怎样的功能和性质? 求助一道关于高一必修一的函数题若从数集A到集合B={-1,1}的函数f(x)满足：f(x)+f(-x)=0,则A中所有元素之和为（ ）A、0 B、1 C、2的n次房 D、无法确定 给老外写Christmas card,都写些什么好?求简单、独特的几句话! thank you for your Christmas card同义句改写thank you for ( )( )a Christmas carddid your parents send you presents on Christmas day?同义句did your parents （ ）presents( )you on Christmas Day 数学跟英语特别难背,特别是数学公式、定理,怎么办? 连词成句a,card,Christmas,is,there,from,Katty. Show Mary the Christmas card.(保持原句意思） 如何改写, 英语原理问题像tens of thousands of意思是成千上万 但是为什么可以两个s+of连用 求原理你有权回答固定搭配,但我也有权拒绝给分 比较中国明朝内阁制与英国责任内阁 制有什么不同. （1）若不等式|x+1|+|x-1|k恒成立,求k的取值范围后天开学了··········最好有点过程 what were you doing和whar you were doing的区别书上有what were you dong也有what you were doing,请问区别是什么 Do you remember what you were doing?谁能帮我找一下新目标初二下册U3的阅读啊, what did you do 与what were you doing怎么区分 what you were doing与what were you doing 差别what you were doing原句Do you remember what you were doing?是初二的知识, 求《some day at christmas》歌词看了justin bieber的圣诞献唱,喜欢这首歌,网络上貌似找不到歌词么,帮个忙!