梅花用来比喻什么人

已知函数f(x)=log2(-x²+x+6)求函数的定义域 降次-解一元二次方程的题目（1）x²+6x+9=2（2）已知一个正方体的表面积为384cm²,求这个正方体的棱长. 动物园里有大象9头,金丝猴4只.金丝猴的数量是大象的几分之几?大象的数量是金丝猴的几分之几? 这个数学题怎么写?底面积/M2 高/M 求圆柱的体积/m37 3 5.6 4 数学题,怎么写?给好评 (a的7次方÷a²×a³)³ 求解第20题,数学一元二次方程, 数学解一元二次方程第三题,其他不做 怎么写已知甲、乙两数的最大公因数（公约数）是12,最小公倍数是72,且甲、乙两数没有倍数关系.求甲、乙各是多少?我急用饿! (x－2y)2的平方乘以(x＋2y)的平方－4(x的平方－y的平方)初一的题目,请大家帮忙看一下啊~~~ 已知3,5,8.M这四个数成比例,求M的值 Don leave the dirty dishes in the kitchen怎么翻译 There an empty bin and a full cupboard in the kitchen yesterday.怎么写? there （ ）a big cake and many candies at the party yesterday A.was B.were 连词成句：mess the yesterday kitchen was(注意大小写） 1500字以上的作文中华魂 求一篇1500字的作文!关于“中国魂”的! 急需一篇中华魂 民族情的作文800字认识中华民族形成的历史,激发民族自豪感,坚定志存高远,报效祖国的信念. Where were you yesterday evening是什么意思,要怎么回答 Where were you yesterday?的汉语意思是? where were you yesterday的否定句怎么写?英语 Where were you yesterday?翻译 Where were you yesterday?为什么用were where were you yesterday afternanoon?回答 ---Bob,where were you yesterday?we had a meeting.--- ( )to come to the meeting?Nobody told me about it.A.Did I supposed B.Would I supposed C.Was I supposed D.Had I supposed 怎么填?为什么? 关于X的亿元二次方程(b-c)x²+(c-a)x+(a-b)=0有两个相等的实数根求证2b=a+c f(x)定义域为正实数且为增函数,f(xy)=f(x)+f(y)求f(1) I was____ yesterday.I am even_____today(ill) China is a very_____ country(old) He was ill yesterday.He is even (ill) today. I hear you were ill yesterday .我昨天听说你生病了,还是 我听说你昨天生病了,哪个正确? （1）3.64÷4+4.36×25％=（2）1.05×（3.8－0.8）÷6.3=（3）（1/2+1/3）÷3/5－17/18=（4）（1－3/4×2/5）÷（1/4+3/8）= 已知关于x的一元二次方程1/4x2-(m-3)x+m2=0有两个不相等的实数根求m的最大整数值在m的最大整数值的条件下求出方程的根