如图，抛物线y=x的平方-3x+2与坐标轴交于a，b，c三点，点p为抛物线上一点

钢架房坡度为多少度后采用Z型钢 第一二题 数学二次抛物线已知：抛物线y=x²+（b-1）x+c经过P（-1,-2b）已知抛物线y=x2+(b-1)x+c经过点p(-1,-2b).（1）求b+c的值；（2）若b=3,求这条抛物线的顶点坐标；（3）若b>3,过点P作直线PA⊥y轴,叫y轴于 如图,抛物线y=x²-2ax-3a与x轴交于A、B两点,与y轴交于C,且经过点（2,-3a).（1）求a的值和该抛物线顶点P的坐标；（2）请你设计一种平移的方法,使平移后抛物线的顶点落在第二象限,并写出平移 已知:如图,抛物线y=ax²-2ax+c【a≠0】与y轴交于点c【0,4】,与x轴交于点a、b,已知：如图,抛物线y=ax2-2ax+c（a≠0）与y轴交于点C（0,4）,与x轴交于点A、B,点A的坐标为（4,0）．（1）求该抛物线的 对圆周率的分析我只想问：为什么人类到现在都没有发现4维空间或更高x维空间呢?我想,这应该和最基本、同围长中面积最大的圆说起.虽然这是我的猜想,但我还是认为x维空间和圆有关联甚至 研究圆周率的发现及应用的目的和意义 一些英语概念题1spring festival is the -----（tradition）festival in china.2who -----（wash）your clothes when you are busy?3children love to play a game -----（call）“bingo”4these ----（candy）are very sweet.5do you know the boy--- 新概念2册英语题根据括号中所给提示把下列每题中的两个句子合并成一个1.We were very interested in this film.We decided to see it again.(so...that)2.He heard the news.He rushed out of the room.(分词作状语）3.She spent 新概念英语第2册P97~99练习题答案拜托,太多了看不完! 第一二题,怎么做? 请问第一二题怎么做? 一二题咋做? 古人为什么要计算圆周率 古人圆周率是怎么算的? 古人算圆周率为什么那么难?直接用一根绳子围一个圆,再算绳子的长度,接着算圆周率就得了呗好吧我承认我是白痴白痴 性概念英语2册45课和44课问题44课有一句话：She was soon out of breath,but she continued to run.45课有一句话：The whole village soon learnt that a large sum of money had been lost.这俩句话里都有soon这个词,这里的第一 英语翻译后面是：loss,damages,costs and expenses(including legal expenses on full indemnity basis)awarded against or incurred or paid by buyer as a result of or in connection with breach of any warranty given by the seller in relation to the g 《冬季到台北来看雨》的阅读题答案 冬季到台北来看雨阅读题答案来时,便听说台北是个多雨的城市,尤其是冬季,雨下得更是非同凡响,为世界上许多城市所不能比.我不是专门到台北来看雨的,我从家乡来,我说家乡话,我唱家乡戏, 第一二题, 英语翻译the 16th President Lincoln.急 请问INVOICE 和 PROFORMER INVOICE ,COMMERCAIL INVOICE之间的区别?还有各自在什么情况下才使用! 祖冲之在研究圆周率方面所取得的成绩有哪些 祖冲之在探究圆周率方面所取得的成就及这一成就获得的国际声誉 说说祖冲之在探究圆周率方面所取得的成就以及这一成就获得的国际声誉. 英语翻译1.本协议一式二份,甲乙方各执一份,具有同等法律效力.2.本协议传真件有效.很常用是不是?但是如何翻译呢? 1.You should take an active part in sports if you want to remain healthy.2.We all greatly respect the scientist who has made important discoveries/ an important discovery in the study of biology.3.She was so young that she didn’t know how to deal w VLFe2 SO4 3 含有 ag 硫酸根离子 若把此溶液加水稀释至 2VL 稀释后溶液中铁离子的物质的量浓度为多少 求五年级上册的十道应用题,要有答案的, 过点A(1,-1)B(-1,1)且圆心在直线x+y-2=0上的圆的方程是?用几何法做 英语翻译your letter of 26 Nov,.1979 came to hand a week ago and 10 Jacks have been received under Air Way Bill 276JFK788 .We shall put them into trial use at once and would be more than happy to keep you advised of all the developments of the tri