匿名用户 2021-10-14 19:20 数学类Mathematics

F(x,y) second order continuous partial derivatives, f(x,1)=2x 1-sinx, f xy= (z,y)=+ 2y, and(0,)= 2y 3, to calculate f(x,... 查看全部

匿名用户 2021-10-14 19:18 数学类Mathematics

A curve y x( 20) make tangent line at point A, so that the area of the plane area enclosed by the tangent line, the curv... 查看全部

匿名用户 2021-10-14 19:18 数学类Mathematics

Let be the third-order matrix, the eigenvalues are 1=2=1, A3=2, its corresponding linearly independent eigenvectors are ... 查看全部

匿名用户 2021-10-14 19:17 数学类Mathematics

Let f(t)= arctan(+x+y2)dx dy, to calculate(t) r-0+e'-1-t

匿名用户 2021-10-14 19:16 数学类Mathematics

Compute the particular solution of the differential equation y"-2y'= xe2x +3x+1.

匿名用户 2021-10-14 19:16 数学类Mathematics

Let the continuous function(x, y) satisfy lim(x,)-x-2y-4--1 to calculate. x+limf(2h,0)-f(0,-h)k→0h

匿名用户 2021-10-14 19:15 数学类Mathematics

Lete-1)dt~2x3+bx(x→0), Compute and.

匿名用户 2021-10-14 19:15 数学类Mathematics

1-12 2 a Let A=1 1 0 B=-2 3 The matrix equation AX is equal to B has a solution.3-14 b 5 (1)To find the constant a and b... 查看全部

匿名用户 2021-10-14 19:14 数学类Mathematics

Letz=2(x,y) be binary function determined by3x2-2xy+y2-yz-z+22-0, and find its extremum.

匿名用户 2021-10-14 19:13 数学类Mathematics

Let be the conical x'2+(y-z)=(1-z)(0≤z≤1) and plane=, find the centroid coordinates of