Calculate the curl rot A of the vector field A(x, y,)=(x++ z) +xyj zk rot A.
2021-10-04 17:40
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2021-10-04 17:39
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回答Random test E has three incompatible results A1, A2 and A3, and the probability of occurrence of the three results is Te... 查看全部
2021-10-04 17:39
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回答lfy=(1+x2)2-√1 +x2,= (1+x2)2+1+x2: is differential equation y'+(x) yq() of the two solutions. To calculate q (x)
2021-10-04 17:38
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回答I have a function(x)=(x-1),<, compute the antiderivative of f(x In x,x≥1,
2021-10-04 17:38
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回答1 Let's say the probability density of population X is: f(x,)={1-08sxs1 0, other Where is an unknown parameter ,,,, is a... 查看全部
2021-10-04 17:37
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回答Let's say the probability density of our random variable x is:2-ln2 f(,x>0 XE,x≤0. X is observed independently and re... 查看全部
2021-10-04 17:37
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回答02-31-20 Let matrix=-1 3 -3 similar to matrix B=0 b 01-2a031 (1)Find the values of a and b: (2)Find the invertible matri... 查看全部
2021-10-04 17:34
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回答Let the vector group a1, az, a3 be basis of R3B1=2a1+2ka3,B2=2a2,B3=a1+(k+1)a3, (1)Prove that the vector groups B1, B2, ... 查看全部
2021-10-04 17:33
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回答We know that the equation of our curve L is =2-x-y starting point for=x(0, v2,0), the finish for the(0, -v2,0). Compute ... 查看全部
2021-10-04 17:33
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