35kv电缆头作业指导书

求文档:已知AX+BY=C的解为X=3,Y=4求方程3AX+2BY=5C的解把X=3，Y=4带入 求方程ax+b=c的解是x=3,求3a+5b=5c的解时间紧急 解关于X的方程：2分之AX-3+3分之AX-5B=1（A≠0） 1．Last month ,part of Southeast Aisa was struck by floods,from _____effects the people are still suffering.A.that B.whose C.those2.Mark was a student at this university from 1999 to 2003,______he studied veryhard and was made Chairman of the Studen 1、In this experiment,they were wakened several times during the night and asked to report what they ______?A.had just been dreaming B.have just been dreaming C.are just dreaming D.had just dreamed答案给的B,为什么?如果不对的话选A还是 1.---Is there anyone in the room?---No one.2.---Is there any person in the room?---None.这两道题有什么区别呢?第一题不可以用none来回答吗? 请帮我解释并解决两个英语练习题He asked me _ with me.A what is the trouble B what wrong was C what was the matter Dwhat trouble it is请就各选项具体解释I am sure_he said is true.A that B about that C of th 请帮我解释一下两道英语题~~~Mr.Green had all his money ------and couldn't--------his holtel bil.(填stolen,pay)The naughty boys were made-------their maths homework the next day.(填to hand in) 若关于x的方程1/3 x=1与3x+2a=ax的解相同,则a=? 求使下列函数取得最大值、最小值的自变量x的集合,并分别写出最大值、最小值是什么.(1)y=3sin(2x+兀/4)...求使下列函数取得最大值、最小值的自变量x的集合,并分别写出最大值、最小值是什么. y=1-1/2cosπ/3x的最大值,最小值怎样求?它们的自变量x的集和呢?到底是怎样做?真的不会. 英语第二题求解释~ 1 you should do what you can [help] those people.他答案上是to help想问为啥是用to,不是有can了吗2 Alice is {beautiful}of the two girls.答案是the more beutiful 想问为啥两者之间比较级还加the了? Two hundred people died in the accident,_______.A many of them childrenB they are childrenC many of whom childrenD many of them are children_______,we got to the village.A With the guide lead usB With the guide leading usC we led by the guideD With t This kind of paper as soft and light as silk but ___ expensive.A.much less B.much little C.many less D.much more thanWe should prevent pollution ____ happily A.to live B.for living C.from living D.living Mr Frank asked me a question ____ I could go with him to ____he called the Treasure House the next week.A.that;which B.whether;thatC.whether;whatD.taht;whereIn no country ____Britain,as has been mentioned,____experience four seasons during the course 已知y=3x-x3上,过点A（2,-2）作曲线y=3x-x3的切线,求切线方程. 已知曲线y=x3+3x,求这条曲线平行于直线y=15x+2的切线方程导数的题 曲线S: y=3x-x3及点P(2,2),求过点P的切线方程要解答过程呀谢拉～ y=1-1/2COSπ/3X .X属于R 求函数的最大值最小值自变量X的集合和最大值最小值是多少 函数y=1-1/2cosπ/3x的最大值的集合、最小值的集合 自学英语的方法有什么好呢,我目前基础比较浅,认识26个字母,词汇量200左右,想自学英语,有什么好方法? 我想自学英语,在1年时间内过4级我的英语底子很差,而现在我的工作又很需要英语,我的时间就只剩下了1年半,所以,想找一个实用的方法 想要自学英语,急求一种自学英语的软件,有单词解释,习题练习等,有视频教学当然最好不过了,我已经出社会三年了``最好能给我一个能直接下载软件的网站，注意是软件！自学英语的软件！ 各位推荐下自学英语的方法英语丢好多年了,现在想从0开始,发音,如何拼写等,希望大家支招,给些自学的方法或推荐些书籍, 方程ax2-(a-3)x+a-2=0中的a取整数,求使此方程的解至少有一个整数的a的值9月5日晚上结束 例4,关于x的方程ax2+2(a-3)x+(a-2)=0至少有一个整数解,且a是整数,求a的值.当a=0时,原方程变成-6x-2=0,无整数解.　　当a≠0时,方程是一元二次方程,它至少有一个整数根,说明判别式 Δ＝4(a-3)2-4a(a-2)＝4 若a是整数,关于x的方程ax2-(a-3)x+a-2=0至少有一个整数解,试确定a的值,并求出相应方程的整数解用根的判别式解 已知当x=-2时,代数式ax的三次方+bx-7的值为5,那么当x=2shi ,代数式ax的三次方+bx-7的值是多少? 一道英语选折题,请说明原因Mr.Baker promised to be back before ()Adark Bdarkness Cthe dark Dthe sunset 两题英语选择【说明理由】what did you buy for( )twin?a.the other b.another c.other d.others( )does sichuan hot pot taste?a.what b.how c.when d.where 2011初一数学寒假作业55面15题等式y=ax方+bx+c 当x=-1时 y=8 x=1时 y=0 x=2时y=-1 问当x=-2是 y=？