西游记读后感300字

帮忙解决1道简单的方程应用题1.用内径为90mm的圆柱形长玻璃杯（已装满水）向一个内底面积为131×131平方毫米,内高81mm的长方体铁盒倒水.当铁盒装满水时,玻璃杯中水的高度约下降多少?（精 英语翻译1.What is surprised us was that the snake could move to the beat of the music=_____ _____ _____ _____ the snake could move to the beat of the music.2.Tom was ill last week,so he missed many classes.=Tom was ill last week,____ ____ ____ __ 已知函数f(x)=2sin^2(wx)+2根号3sinwxsin(π/2-wx)（w＞0）最小正周期为派①求函数f(x)的单调递增区间及对称中心坐标②求函数f（x）在区间【0,2π／3】的取值范围 已知函数f(x)=√3sin(wx)-2sin^2(wx/2)+m(w>0)的最小正周期为3π且当x∈【0,π】时,函数f(x)的最小值为0.(1)求函数f(x)的表达式（2）在三角形ABC,若f（C）=1,且2sin^2 B=cosB+cos(A-C),求sinA的值 已知函数f(x)=2sin(wx+θ)（w＞0,0＜θ＜π）的最小正周期为π,且f（π/4）=...已知函数f(x)=2sin(wx+θ)（w＞0,0＜θ＜π）的最小正周期为π,且f（π/4）=根号2.（1）求w,θ的值,（2）若f（α/2）=-6/5,求cos2α 已知正比例函数y=kx和反比例函数y=x分之6的图像都经过a(m,-3) 求此正比例函数解析式 已知正比例函数y=kx(k≠0)与反比例函数y=2/x的图像都经过点（m,2已知正比例函数y=kx(k≠0)与反比例函数y=2/x的图像都经过点（m,2），求此正比利函数解析式及另一个交点的坐标。 ∫(3x^4+x^2)/(x^2+1)dx 设X的分布率为X=1 2 3 4,P=0.1 0.2 0.3 0.4,求(1)EX,DX;(2)E(2X-1),D(3X-10) ∫1/[(2-3x)(2x+1)] dx=答案是1/7ln|(2x+1)/2-3x|+c 已知正比例函数Y=KX与反比例函数Y=3/X的图象都经过点A(M,1),求此正比例函数的解析式及另一交点的? 如图,反比例函数y=-2/k和正比例函数y=kx的图像都经过点A(-1,m),(1)求出正比例函的解析式.（2）请根据图像直接写出当y1＞y2时自变量的取值范围 已知函数f(x)=3ax^2-2ax+1对所有x属于R都有f(x)>0,求实数a的范围 英语试题,题看补充把下列题中括号中的单词按正确的形态组成句子1.My frind (like) birthdays.2.always (invite) her to my parties.3.She always (invite)me to her parties.4.I (go) to her parties.5.She (come)to my parties.6.We (pla 找些高中英语试卷 高中英语试题做做,哪里有? 已知函数f(x)=4x^3-3ax^2+3a/16a大于0且x实数函数最小值大于0,求a取值范围打错,是极小值 谁帮我做一下以下几个英语试题题号:1 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:3.67内容:If you live in Wuhan one day and in Shenyang the next, you ______ the change in temperature.选项: 帮忙做下下面的英语试卷.. 英语试卷2 英语试题二25、The business of the supermarket is so good that you can often see so many people ____on the floor outside ,_____to buy bargains.A.sit; wait B、seated; waitingC、seating; waiting D、sitting; wait26、If he ____ that he ____to wo 已知函数f(x)=ax^2+x-1+3a(x属于R)在区间[-1,1]上有零点,求实数a的取值范围 英语试题 218.James is ( ) French than Polly.A.a bit better atB.a bit more good atC.a bit good at满分：2 分19.A:( )like to have a coffee?B:Yes,please.A.Are youB.Would youC.Can you满分：2 分20.A:( )is the nearest chemist's?B:On the corner.A 怎么解关于一元二次方程的应用题增长率方面,降价,涨价方面 已知f(x)是定义域为【-1,2）上的增函数,若f（a-1)大于f(1-3a),求实数a的取值范围 已知f（x）=a^x（a^x-3a^2-1）（a>0,且a≠1）在区间[0,+∞）上是增函数,求实数a的取值范围.因为我很笨,别写太复杂,我会看不懂的, 英语试题II-How would you like to mail it?-____________.Thank you very muchPost office is over thereI'll be comingBy air mail,please-Can I borrow your digital camera for a couple of days?-____________.Yes,you may not borrowyes,go onSure,here you a 英语试卷216.The maths problem is so difficult that of us can work it out.A.nobody B.no one C.all D.none17.He enjoys football matches on TV.A.to watch B.watch C.watched D.watching18.Will you please give me more tea?A.much B.little C.some D.a littl 2道英语试题,1.The television is a______machineA.newly-invented B.new-inventedC.newly-invent D.newly-invention2.Would you mind if I ______to your notes?A.referred B.referringC.refer D.can refer 一元二次方程怎样解应用题 分解因式 (x的平方+3x)的平方+3(x的平方+3x)+2急需.! (x的平方+3x)的平方+3(x的平方+3x)+2 已知函数f(x)=2sin(kx/3+π/4),如果使f(x)的周期在(2/3,3/4)内,求正整数k的值 函数f（x）=2sin（2-3x）的最小正周期