匿名用户 2021-10-21 14:37 数学类Mathematics

Let the equation yln(y-x)+ cos(ry) -1=y determine the function y=y(x), then to calculate y"().

匿名用户 2021-10-21 14:36 数学类Mathematics

Calculate《lim tanx -x cos(xe2)rD x3

匿名用户 2021-10-21 14:36 数学类Mathematics

Let A, and be n(n23) nonzero matrix of order, AB=, calculate r(B).

匿名用户 2021-10-21 14:34 数学类Mathematics

Given that the four-dimensional column vectors a1, a2 and a3 are linearly independent, if vector (i 1, 2, 3,4) is nonzer... 查看全部

匿名用户 2021-10-21 14:33 数学类Mathematics

Letz=z(x,y) given by+,y+)=0, where F is continuously partial and xF,x az+ ay az +yF+0, to calculate xax

匿名用户 2021-10-21 15:29 数学类Mathematics

Let a be the 3rd order real symmetric matrix, if there exists the 3rd order orthogonal matrix11 C13 v22 C23, make quadra... 查看全部

匿名用户 2021-10-21 15:29 数学类Mathematics

Let D={(x, y)+y2<,y >0), let=In(1+x2y )dx dyJ=(ey-1)dx dy, K=x2ydxdy Compute the permutations of, J, and K.

匿名用户 2021-10-21 15:30 数学类Mathematics

Set f with the partial derivative of first order continuous, and f (x +y,x-y)=(x2- xy-y2), the calculation of xf'x(x,)+ ... 查看全部

Fay 2021-10-18 20:28 地球与空间科学Earth and Space Science

I WANT TO KNOW THE ANWSER

匿名用户 2021-06-23 18:46 会计Accounting

X-Tel budgets sales of $60,000 for April, $100,000 for May, and $80,000 for June. In addition, sales commissions are 10%... 查看全部