匿名用户 2021-09-11 20:30 数学类Mathematics

Sets the distribution function of random variable X to() 0.() +0.7(), () is a standard of distribution function of norma... 查看全部

匿名用户 2021-09-11 20:29 数学类Mathematics

Set A, B are 2 order matrix, A*, B*, respectively A, B of adjoint matrix, if |A=2, 3, Compute the adjoint matrix of A

匿名用户 2021-09-11 20:28 数学类Mathematics

Let a1,, a3 are a basis for the 3-dimensional vector space, calculate the transition matrix from basis:a1,a2,a3 to basis... 查看全部

匿名用户 2021-09-11 20:27 数学类Mathematics

As shown in figure, the square{(x,y)ll≤1,ly≤1} is divided into four sections by its diagonal(k=1,3,), to calculate=ycos ... 查看全部

匿名用户 2021-09-11 20:23 数学类Mathematics

For x-0, f(x)=x-sinax is the same as g()=x2In(1-bx). Compute a and b.

匿名用户 2021-09-11 20:23 数学类Mathematics

Let X1, X2, .... Xn, is a simple random sample of population N(u,o2), and write:X=,2=1∑(x,-x)2,T=x2-s2n=1n-1i=1n (1)Prov... 查看全部

匿名用户 2021-09-11 20:22 数学类Mathematics

Let the random variables X and Y be independe, and the probability distribution of X be P{X=i =(i=-1,, 1), the probabili... 查看全部

匿名用户 2021-09-11 20:22 数学类Mathematics

Let a and B be 3-dimensional column vectors and the matrix A= aaT+BBT, where a and B' are the transposes of a and B resp... 查看全部

匿名用户 2021-09-11 20:21 数学类Mathematics

Take the function(x)=1-x2(0≤x≤π)xpands into cosine series and computes the sums-1)n-12n=1

匿名用户 2021-09-11 20:20 数学类Mathematics

Let f(x) be a continuous function: (1)Prove by definition that the function F(x)= f(t)dt is differentiable and F'(x)F(x)... 查看全部