匿名用户 2021-09-24 17:38 数学类Mathematics

To calculate() dx where f(x)=In(+1)dt

匿名用户 2021-09-24 17:38 数学类Mathematics

Let the random variable Y obey an exponential distribution with parameter 1, and a be constant and greater than zero, to... 查看全部

匿名用户 2021-09-24 17:37 数学类Mathematics

Let A=(aii) be A nonzero matrix of order 3, is the determinant of A, Aii is the cofactor of aij, if ajj +Aj =(i, j 1,2,3... 查看全部

匿名用户 2021-09-24 17:37 数学类Mathematics

To calculate Inxdx(1+x)

匿名用户 2021-09-24 17:37 数学类Mathematics

x=sin, d2 Let (t is the parameter), to calculate y=tsin t +cos td2

匿名用户 2021-09-24 17:36 数学类Mathematics

Given that =e-xe",y2 =e-xe,y3 =-xe"are three solutions of a second-order inhomogeneous linear differential equation with... 查看全部

匿名用户 2021-09-24 17:35 数学类Mathematics

Let the function y=f(x) be determined by the equation y-x(1-y), to calculate lim nf-1

匿名用户 2021-09-24 17:35 数学类Mathematics

Random variable X~t(n), Y~F(1,n), Given a (c} =a, to calculate P{Y>}.

匿名用户 2021-09-24 17:34 数学类Mathematics

Let X1, X2, X3, be random variables, and~N(,1), X2~N(0, 22), X3~N(5,32), Pi P{-2< 2), (=1,2,3). Compare the sizes of ... 查看全部

匿名用户 2021-09-24 17:34 数学类Mathematics

let:x+2=1,2:x+y=2,3:x+2y=2,l4:2x2+y=2 for four plane curve counterclockwise. Remember,=y6x+2x-3dy(i=1,2,3,4) To calculat... 查看全部