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设X~N(1,0.25),则P(0
A . 2φ(0.501)
B . 2φ(2)-1
C . 2φ0.5-1
D . 1-2φ(2)
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计算题: 设$1=FF5.6525/35,$1=DM1.4390/10, 问:
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设向量组A:α1=(1,-1,0),α2=(2,1,t),α3=(0,1,1)线性相关,则t等于()。
A . 1
B . 2
C . 3
D . 0
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计算题:设$1=FF5.6525/35,$1=DM1.4390/10,问:1马克对法郎的汇率是多少?
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设AUD1=$0.6525/35,$1=JPY119.30/40,AUD/JPY的汇率()。
A . 182.555/182.708
B . 77.843/78.028
C . 78.028/77.843
D . 173.453/173.852
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设X~N(0,1),则P(-1≤X<2)=()。
A . φ(2)-φ(1)
B . φ(2)-φ(-1)
C . φ(2)+φ(1)-1
D . 2-φ(1)-φ(2)
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设0,1,0,1,1为来自总体B(1,p)的样本观测值,则p的矩估计值为()。
A.1/5
B.2/5
C.3/5
D.4/5
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设函数fz)在[0,1]上连续,在(0,1)内可导,且证明在(0,1)内存在一点c,使得f'(c)=0.
设函数fz)在[0,1]上连续,在(0,1)内可导,且<img src='https://img2.soutiyun.com/ask/2020-12-27/977943646888836.png' />证明在(0,1)内存在一点c,使得f'(c)=0.
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设0<λ<1,,证明:
设0<λ<1,<img src='https://img2.soutiyun.com/ask/2020-12-15/976886971942264.png' />,证明:
<img src='https://img2.soutiyun.com/ask/2020-12-15/976887004344117.png' />
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设f"(x)>0,比较f'(0),fˈ(1),f(1)-f(0)的大小。
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设函数f(x)二阶连续可导,且f(0)=0,f'(0)=1,求
设函数f(x)二阶连续可导,且f(0)=0,f'(0)=1,求<img src='https://img2.soutiyun.com/ask/2020-12-08/976282425721188.png' />
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设D={(x,y)|0≤x≤1,0≤y≤1},则=______.
设D={(x,y)|0≤x≤1,0≤y≤1},则<img src='https://img2.soutiyun.com/latex/latex.action' />=______.
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设AUD1=$0.6525/35,$1=JPY119.30/40,AUD/JPY的汇率()A.182.555/182.708B.77.843/78.028C.78.028/
设AUD1=$0.6525/35,$1=JPY119.30/40,AUD/JPY的汇率 ()
A.182.555/182.708
B.77.843/78.028
C.78.028/77.843
D.173.453/173.852
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设0<α<b<1,则()
A.loga2<logb2
B.log2a>log2b
C.a1/2>6b1/2
D.<img src='https://img2.soutiyun.com/ask/uploadfile/5721001-5724000/bd4cf0fc44dd8b8898784e67391e98b0.jpg' />
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设l是从点(0,0)沿y=1-|x-1|至点(2,0)的折线段,则曲线积分
设L是从点(0,0)沿y=1-|x-1|至点(2,0)的折线段,则曲线积分<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17672640/2015102616112131846.jpg' />-ydx+rdy等于()
A.0
B. -1
C. 2
D. -2
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设D是以点0(0,0),A(1,2) B(2,1)为顶点的三角形区域,求.
设D是以点0(0,0),A(1,2) B(2,1)为顶点的三角形区域,求
<img src='https://img2.soutiyun.com/ask/uploadfile/9084001-9087000/943a4603436edee865f23a35ce76b3b9.jpg' />.
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设随机变量X服从0-1分布,P(X=1)=0.3, 则P(X>0.5)的值为
A.0
B.0.3
C.0.7
D.1
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设函数f(x)在[0,1]上连续,在(0,1)内可导,且证明在(0,1)内存在一点ξ,使f'(ξ)=0。
设函数f(x)在[0,1]上连续,在(0,1)内可导,且<img src='https://img2.soutiyun.com/ask/2020-08-07/965639441738848.png' />证明在(0,1)内存在一点ξ,使f'(ξ)=0。
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设函数f在点x=1处二阶可导,证明:若f'(1)=0,f"(1)=0,则在x=1处有
设函数f在点x=1处二阶可导,证明:若f'(1)=0,f"(1)=0,则在x=1处有<img src='https://img2.soutiyun.com/ask/2020-11-28/975441569605878.png' />
<img src='https://img2.soutiyun.com/ask/2020-11-28/97544157767434.png' />
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设A={0,1},0={1,2),确定下面集合。
<img src='https://img2.soutiyun.com/ask/2021-01-10/979154436444698.png' />
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设a>0,a≠1,证明:a<sup>x</sup>-1~xlna(x→0).
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设a≠0,1≤i≤n.求
<img src='https://img2.soutiyun.com/ask/2021-01-26/980548664164606.png' />
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设积分区城为D=|(x,y)}0≤x≤1,0≤y≤1}.计算二重积分
设积分区城为D=|(x,y)}0≤x≤1,0≤y≤1}.计算二重积分
<img src='https://img2.soutiyun.com/ask/2021-01-10/979148559653565.png' />
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设两点列同底,求一射影对应使(0,1,∞)分别变为(1,∞,0)