观沧海创作背景

教育制度是education system还是educational system? as for administration,what's the basic characteristic of British and American education system?希望大家可以早点回,我在这等着, 指数移动平均的计算公司是什么? 指数加权移动平均 指数加权移动平均 是什么啊能不能举个例子或者写出程序啊 数理统计上面的 一元二次方程跟与系数关系题目（1）已知关于x的方程（a+1)x2+3x+a2+3a=0的一个根为0,求方程的另一个根及a的值（2）已知x1,x2是关于x的方程x2+2(m-1)x+2m2-23=0的两个实数根,且x1平方+x2平方=26,求m的 What's the main religion in Asia? What are the general features of Britain?什么是英国的一般特征? What is the main problem in Northern Ireland of the UK?用英文回答那主要的问题是什么呀 用英文回答 (英国的组成部分)What are the major parts of united kingdom?面积.人口等... 已知函数f(x)=2^(ax+b)在[1,2]上的最小值为1,最大值为2,求f(x)的解析式 will make an e-card for mum last night改错，将错误的一项写在括号内，并将正确的答案写在右的横线上will make an e-card for mum last night.________ __ __A B C —————————— She will make a card.改为现在进行时态!急啊!快! Jack told me ," I want to have an ice cream 该为间接引语把Jack told me ," I want to have an ice cream这句话 该为间接引语 Test scores make you either happy or sad and your parents pay high attention to .Test scores make you either happy or sad and your parents pay high attention to your test results.You spend days filling in blanks,trying to make the best a (92) to ques How Can You Make Your Parents Happy可以作为英文题目吗 感恩奉献社会征文 MATLAB求解非线性方程组用fsolve函数求解建立函数文件fxyz.mfunction F=fxyz(X)x=X(1);y=X(2);z=X(3);F(1)=x^2+y^2+z^2;F(2)=3*x+5*y+6*z;F(3)=x-3*y-6*z-1;给定初值[-1,1,-1],调用fsolve函数求方程的根X1=fsolve('fxyz',[-1,1,-1]',op matlab中fsolve解非线性方程组算例>> syms x yeq1=(1-0.14*x^2)*(0.3+0.7*exp(-0.65*x^6))-0.2537*y;eq2=x-3.9735*y;ezplot(eq1)hold onezplot(eq2)x0=[2 1;-4 -1]for ii=1:2[x fval]=fsolve(@f,x0(ii,:))end运行时总出现Error:"f" was previously used matlab 中fsolve求解非线性方程组可以给定解的区间么 关于一元二次方程 二次函数的题目~急已知关于X的二次函数y=x^+(2k-1)x+k^-1(1)若已知x的一元二次方程x^+(2k-1)x+k^-1=0的两根的方程平方和等于9,求K的值.(2)在 （1）的条件下,设这个二次函数的图像 I want to make a ( )boat.Have we got ( )ice-cream? 已知二次函数 y=x²-(m²+8)x+2(m²+6).（1）求证：不论m取任何实数,此函数图像都与x轴有两个交点,且两个交点都在x轴的正半轴上.（2）设这个函数的图像与x轴交于B,C两点,与y轴交于A点, Please remember ,______(careful) you are,____(few)mistakes upi will make mistakes的中文是什么 .Remember this,children.______junk food you eat,______you’ll feel.A.the fewer; the more healthy B.the fewer; the healthierC.the less; the healthier D.the less; the more healthily 请问m³/sec这个单位是什么意思? 第二步的sec^2(x^3)怎么消的啊 What have been the main effects of technological development on society 哪位能帮我换一种方式说```就是意思相同但是句型不同~谢谢了```当然要优美一点的,不要太过简单的,我也会``KEVIN``我句中的是EFFECTS。名 七下第二单元综合提优测评卷 13.-Remember this,John __carefull you are.-Remember this,John __carefull you are.__mistakes you will makes.-Thanks,Miss Rose.A.The more；the least B.The more；thefewer C.The less；the fewer D.The more；the Thanks allabout.Let me remember I have been to this world Thanks for you instead me made this decision 某校200米跑道的内两圈,弯道为半圆形,跑道宽1.2米.两名运动员沿各自跑道赛跑一圈,为使两人所跑距离相等,应让外跑道的运动员的起跑点前移多少米? 已知函数f(x)=1/lg(2^x+4*2^-x-a)的定义域为R,求实数a的范围