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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
(2009•淮安模拟)在叶绿体中色素的分离实验中,发现滤纸条上色素带颜色较浅,原因不可能是( )
14.15.10.21的最小公倍数
food and drink 与food and drinks
Lisa and Linda are sisters.They_
许多电冰箱的背后漆成黑色,原因是( )
精彩回答
No one knows ______effects the GM material might have on the food chain
我国春秋战国时期“百家争鸣”、文化繁荣现象出现的原因包括( )
函数f(x)=x(三次)+sinx+1 x属于全体实数. 若f(a)=2,则f(-a)的值为?
数字信号处理题
解方程 5/11-x=1/5