If the function(x) satisfy the equation f(x)+"()-2f(x) =0 and f"(x) +(x) =2e", to calculate(x).
2021-09-20 12:53
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回答The 1m length of the stick was randomly cut into two sections, and the correlation coefficient of the two lengths was ca... 查看全部
2021-09-20 12:52
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回答Let the random variables x and Y be independent of each other, and obey the exponential distribution of parameter 1 and ... 查看全部
2021-09-20 12:52
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回答Let a be the 3rd order matrix, P be the 3rd order invertible matrix, and (100, if= (an, az, a3), (a1 +a2, az, a3), to ca... 查看全部
2021-09-20 12:52
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回答Let X.,,.., be a simple random sample from a normal population N(Ho,),12 where o2 is known, o2 >0 is unknown. X and S... 查看全部
2021-09-20 12:52
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回答Letx1,x2,…,x, be simple random sample from normal population(uoo2) where o2 is known, o2 >0 is unknown. X and S2 are ... 查看全部
2021-09-20 12:51
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回答Let the probability distributions of random variables x and Y be, respectively:XP0123yP10131133 And P{=Y2)=1. (1)Calcula... 查看全部
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回答Let a be real symmetric matrix of order 3, the rank of A is 2. andA0000 (1)Find all the eigenvalues and eigenvectors of ... 查看全部
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回答A vector group =(1,0,1)T, a2 =(0,1,)T, a3 =(1,3,5) cannot be vectors B1=(1,1,1),2=(1,2,3),1=(3,4,a) linear said. ()Find ... 查看全部
2021-09-20 12:50
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回答We know that(x,) has second continuous partial derivatives, and f(1,)=, f(x, 1)=0,(x,)dxdy =a, where=(x,y)0≤x≤1,0≤y≤1}. ... 查看全部
2021-09-20 12:50
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