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在现代文中,使用古诗词有什么作用? 已知函数y=sin²x+sinxcosx+2(x∈R),求函数的值域 英文诗 i like.i also like麻烦把中文也写下 初3等级的就OK He likes comedies,and I also like( )括号里填什么?为什么?（ ）里填it或是them 求函数y=[(3x^2+3)(9x^2+1)]/(3x^2+1)^2的值域 有理数除法,回得来,做对了,我会给高分,①在括号里填＞、＜、＝、≥、≤若|a|/a=-1,则a（ ）0,若|b|/b=1,则b（ ）0 ②若a、b互为相反数,x、y互为负倒数,则（a+b）·x/y-xy=（?）”等于多少?③计算（ In all my teachers,l like my English teacher best.(短文改错） My classmates and I like our English teacher.She is ( ) great fun.A.a B.an C.the D./My classmates and I like our English teacher.She is ( ) great fun.A.a B.an C.the D./应该选哪个?说清理由,并把关于这个句子的重点找出来. 求高阶导数的莱布尼茨公式的系数具体是什么那个组合符号C(k n)到底表示什么?谁的阶乘除以谁的阶乘啊到底? my English teacher w____ me to study hard.we are t ____ our best to learn english welll. y=sin²x+sinxcosx+2 （x∈R)求函数值域. This is ____(me)English teacher,Mr.Liu.______likes_______(we)and______love______(she)too. 已知函数y=sin²x+sinxcosx+2(x属于R)求函数的值域要过程 函数y=sin+cosx+sinxcosx（x∈R）的值域为 用c语言编程实现输出x=1,2,3,.,30的平方根表,该怎么写啊? 梯形ABCD中,AB//CD,AB=2,DC=10,AD=BC=5,点M,N分别在边AD,BC上运动,并保持MN//AB,ME垂直于DC,NF垂直于DC,NF垂直于DC,垂直于分别为E,F1.求梯形ABCD的面积2.探究一：四边形MNFE的面积有无最大值?若有,求出这个最 已知函数fx)=lnx+a/x,若f(x) 设函数f(x)=x的立方+ax的平方-a方x+1,g(x)=ax平方-2x+1,其中实数a不等于0.若f(x)于g(x)在区间(a,...设函数f(x)=x的立方+ax的平方-a方x+1,g(x)=ax平方-2x+1,其中实数a不等于0.若f(x)于g(x)在区间(a,a+2)内为增函数 X:89 -Y:143是哪个方向? 如果x:y:z＝2:4:3,x和z的和是90,x+y+z的值是多少 英语翻译The FireFire can help people in many ways.But it can also be very harmful.Fire can keep our house warm,give light and cook food.But fire can burn things,too.Big fire can burn trees,houses,animals or people.Children sometimes like to play 2/3X+7=5/6x X=? 已知函数f(x)=x的立方+ax的平方+3bx+c(b不等于0）,且g(x)=f(x)-2是奇函数.（1)求a、c的值?过程详细点!速度! 已知函数f（x）=x的三次方+ax的平方+3bx+c（b不等于0）,且个g（x）=f（x）-2是奇函数,求a,c的值如题 梯形ABCD中,AB//CD,AB=2,DC=10,AD=BC=5,点M,N分别在边AD,BC上运动,并保持MN//AB,ME垂直于DC,NF垂直于DC,NF垂直于DC,垂直于分别为E,F1.求梯形ABCD的面积2.探究一：四边形MNFE的面积有无最大值?若有,求出这个最 matlab一个作图语句看不懂~subplot('position',[0.15 0.45 0.7 0.45]),pcolor(tview'); 我知道subplot是设置子图,但是我只知道最简单比如subplot(abc)之类；网上查了position是设置画图区域什么的；但是我看不懂 【MATLAB】请问这个作图语句哪里有问题呢,为什么出现空图像?a=1;b=1;u0=1;pi=3.14159265;da=a/100;db=b/100;[x,y]=meshgrid(0:da:a,0:db:b);u=0*x;N=20;for I=0:N n=2*I+1; c=n*pi/a;d=n*sinh(c*b); u=u+sinh(c*x).*sinh(c*y)/d;endu= 麻烦帮我分析下句子的结构Even an end which it would be noble to pursue if it were attainable may be pursued unwisely if it is inherently impossible of achievement. 麻烦分析此句结构Against the innumerable interests which could show that particular measures would confer immediate and obvious benefits on some,while the harm they caused was much more indirect and difficult to see,nothing short of some hard- 麻烦帮分析下这个句子的结构For example ,some early societies ceased to consider certain rites essential to their wellbeing and abandoned them.and引导的并列句? 英语翻译| Home | Introduction | Expo Map | Main buildings | characteristic views | gardens | Shenyang·China |Contact Us | IntroductionShenyang is the economic,cultural traffic,financial and commercial center in China’s northeast ,it is the pro 英语翻译过去就让它过去,会在未来走的更好,因为抛弃了不必要的包袱,生活才会更美好,人生如此短暂,有什么理由,不去好好的生活呢,有太多的事情要我去做呢,有很重要的人等着我去珍惜,不