匿名用户 2021-09-18 10:18 数学类Mathematics

Let=(,,, a4) be the fourth order matrix, A" is the adjoint matrix of, if (1,0,1,0) is a fundamental solution to Ax=0, co... 查看全部

匿名用户 2021-09-18 00:49 数学类Mathematics

Let be the third-order matrix, add the second column of to the first column to obtain the matrix B, and then swap the se... 查看全部

匿名用户 2021-09-18 00:48 数学类Mathematics

In(cotx)dx,k=ln(cosx)dx, compare the magnitude relationships of, J and K.

匿名用户 2021-09-18 00:47 数学类Mathematics

Let the sequence {an} decrease monotonically, and f(x)> 0, f'()=0, find a sufficient condition that the function z=f(... 查看全部

匿名用户 2021-09-18 00:46 数学类Mathematics

Find the inflection point of the curve=(x-1)(x-2)2(x-3)3(x-4)

匿名用户 2021-09-18 00:45 数学类Mathematics

Let's say the probability distribution of population x is23P1-00-0202 Where, parameter OE (0,1) is unknown, and N; repre... 查看全部

匿名用户 2021-09-18 00:45 数学类Mathematics

Let the probability density of the two-dimensic random variable (X,) be:f(x,y)=Ae-2+2x-y2,-∞

匿名用户 2021-09-18 00:44 数学类Mathematics

入11aLet:a=0-10b=1 we know that the linear system Ax= has two11 different solutions. (1)For, a (2)Find the general soluti... 查看全部

匿名用户 2021-09-18 00:43 数学类Mathematics

Find the convergence domain and sum function of the power series(-1)n- 2nn=12n-1

匿名用户 2021-09-18 00:43 数学类Mathematics

Letu, In t In(+) "dt( =1, 2 ,..) find: lim.