chenxiaojing 幼苗
共回答了19个问题采纳率:94.7% 举报
1年前
回答问题
为什么Sa(x)=sinx/x被叫做抽样函数?求大神帮助
1年前1个回答
己知SABC是球O表面上 的点sA垂直干平面ABC AB垂直于BCSA=AB=1BC=根号
如下图所示,S是一个发光点,S’是它在平面镜中成的像,SA是S发出的一条光线,请在图中画出平面镜的位置和SA经平面镜反射
1年前3个回答
he was too embarrassed to say anything.to sa
三棱锥S—ABC的三条侧棱两两互相垂直,且SA=1,BS= ,SC= ,则底面内的角∠ABC等于(
Edith has invented a device ____ can solve the problem of sa
如图所示,在三棱锥S-ABC中,平面SAB⊥平面ABC,AC⊥AB,SA=SB=AB=2,AC=1
(2014•葫芦岛二模)已知正项等比数列{an}中,2a1+3a2=1,且a32=9a2a6,Sa为其前n项和,则Sn=
The manager would rather his daughter did not work in the sa
按照题目的要求作图(1)如图甲所示,SA、SB是光源S发出的两条光线.其中SA平行于主光轴,SB过左焦点,请画出这两条光
( )23.The world _____ all the time .Things never stay the sa
The brigde was named __the hero who had given his life to sa
1年前5个回答
微观经济学从原点出发的射线与STC曲线相切的产量上,必有( ).A、SA
what matters is nt how often you call,but rather what you sa
求一段英语化工类文献开头的翻译School of Chemical Engineering, Universiti Sa
英语翻译Don't let any mistake about what i said and what i'll sa
1年前4个回答
在图中,A和B为液压传动的两活塞,C为圆木棒,D为墙壁.设它们的面积为SA=SC=[1/2]SB,作用在A上的力为F,则
The blackboard needs ____(clean). English names are ____ (sa
yesterday,we went out for a walk sa a fine day it was a fine
适当形式填空1.I saw the cat _____(climb) a tree.根据汉语意思提示完成句子2.I sa
你能帮帮他们吗
x+x-1/2=2-2x-1/3.
初二语文题五柳先生传中描写五柳先生安贫乐道的生活状况的句子是
此曲只应天上有的下一句是什么出自哪一首诗?
人教版八年级数学上册第十一章试题
青铜镜的特点 银镜 的特点 玻璃镜的特点 钢镜的特点
精彩回答
There were several p_________ (病人) waiting at the doctor's.
四边形ABCD中,向量AB=a,向量BC=b,向量CD=c,向量DA=d,若a*b=b*c=c*d=d*a,求证四边形为矩形 a b c d都是向量
已知反比例函数y1=k/x的图象与一次函数y2=ax+b的图象交于点A(1,4)和点B(m,﹣2) ,求这两个函数的表达式;
一个人有缺点并不可怕,关键是( )
已知tana=3,求下列各式的值 1.sina+cosa/sina-cosa 2.sina.cosa 3.sin^2 a+sina.cosa