张的笔顺怎么写

设f(x)=-2x^2+3tx-t(x,t属于R）的最大值为u(t),当u(t)取最小值时,t的值等于多少?[4(-2)(-t)-(3t)^2]/4(-2)=9t^2/8-t为什么这个是最大值？ impossible什么意思? impossible You should limit your ____(expend)to what is essential.怎么填?为什么?顺便翻译一下, i should give you 3words:i love you!if i have to add a limit to it.it is 10000 years Governments should make policies to limit population growth.do u agree?老师让写disagree,250 word,万分感激^^ i am used to...1 i am used to travelling by air2 i used to fly there from Europe in holiday.问题请问两句中为什么一个用am 而另一个不用am呢?它们的句型分别是? 以社会主义为核心价值观为话题写一首诗,诗的题目怎么写 i am used to catch the eyes. 翻译 未几,出知天雄军兼兵马部署 71军的首领是谁 瓦德西统帅的军队叫什么? 瓦特西统帅的军队称什么,这场战争对社会的严重危害是什么,这屈辱的历史对我们今天有何启示 瓦德西统帅的军队称什么? after rain comes fair wwather After rain comes fair weather. Can you guess____the world _______first letter is given isA what whose B what which Cwhat is whose Cwhat is that 英语翻译 看看french在这是什么意思?Bree:"It's a romantic date with a single attractive man,and I intend to French the hell out of him." 介绍几首朋克音乐的经典吧!要经典中的经典．．．．．朋克音乐! French frise的French是什么意思?什么来历?为什么? french什么意思 介绍几首朋克中文歌要朋克的,最好里面也有一些摇滚的元素在里面的...中文的 t was almost 9:00 pm when Mia Janson left her office to go home.It was 1 .She started her car and 2 down the dark road that led to her house in the country.She 3 the radio and listened to songs while she was driving.The heater wasn’t working,and si 作文生活中的挫折怎么写 高乐雅咖啡（Gloria Jeans Coffees）是澳大利亚第一品牌咖啡?高乐雅咖啡 高乐雅咖啡一般消费多少?高乐雅咖啡 高乐雅咖啡的广告语是什么? 已知数列{an}中,a1=1,anan+1=(1/2)^n 求数列{a2n}与{a2n-1}都是等比数列 在数列｛an｝（下标,后同）中a1=1,a2=2,数列｛anan+1｝是公比为q（q>0)的等比数列问题：求数列｛an｝的前2n项和S2n 用什么成语比喻记者 What annoys you?是什么意思是中文的翻译!~急求~~