Let the function f(u,) have continuous partial derivatives of the 2nd order, and y =(e", cos x), to calculate dyl dy dx=... 查看全部
2021-10-04 18:01
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回答Sets the distribution function of random variable X to F()=0.5()+0.54-4 where D (X) is a standard normal distribution fu... 查看全部
2021-10-04 18:01
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回答(101 Let matrix A=11 2, a1, az,and a3 are linearly independent 3-dimensional011 column vector groups. Calculate the rank... 查看全部
2021-10-04 18:00
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回答Compute the sum function S(x) of the power series (-1) n-Inwn-1 in the intervaln=1(-1,1)
2021-10-04 17:59
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回答Compute the directional derivative of f(x, y,)=x2y z2 at the point (1,2,0) along the vector n=(,2,2).
2021-10-04 17:58
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回答3x2 Let's say the probability density of total Hugh is f(x; 0) =030
2021-10-04 17:57
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回答If the curve integral xdx-aydy in the region=(x,y)|x2+y2<1inx2+y2-1 Independent of the path, compute a.
2021-10-04 17:51
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回答Compute the general solution y to the differential equation y"+2y'+3y=.
2021-10-04 17:51
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回答1 Known that f(x)=1+x 2, to calculate f(3)(0).
2021-10-04 17:59
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回答Let the two-dimensional random variable (X, Y) be in the region:D={(x,y)0 (1)Write the probability density of (,); (2)Ar... 查看全部
2021-10-04 17:44
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