匿名用户 2021-10-21 15:02 数学类Mathematics

To calculate- dxdy, where={x,yl-1≤x≤1,0≤y≤1

匿名用户 2021-10-21 15:02 数学类Mathematics

Letu=f(x+y,x,y,2) in which=z(x,y)be determined bydt and+a continuous partial derivatives, can guide p and p(y+z)-p(x+)-1... 查看全部

匿名用户 2021-10-21 15:01 数学类Mathematics

Let be A third-order matrix with eigenvalues of 2,2, -1 and corresponding linearly independent eigenvectors a1, az, a3. ... 查看全部

匿名用户 2021-10-21 15:00 数学类Mathematics

Let z f(x, y) be continuous and lim(,)-2x+y-3=2, to calculate dz la1.2).x1(x-1)2+(y-2)22

匿名用户 2021-10-21 14:59 数学类Mathematics

To calculate lim(cos. )-(1+)0 r3

匿名用户 2021-10-21 14:58 数学类Mathematics

222 Let D be given by the curve L:x3+=(a>0) the volume of the geometry formed by the rotation of area D around the X-... 查看全部

匿名用户 2021-10-21 14:57 数学类Mathematics

(cosx)-(1+x2) To calculate lim r3

匿名用户 2021-10-21 14:56 数学类Mathematics

Let f(u)be a continuous function, and the region D is bounded by=1, x andy=-x, to calculate= sin'x. [x +yf(x2+y2) ]dx dy

匿名用户 2021-10-21 14:52 数学类Mathematics

When>0.vx+1-x=1 2,+( to calculate lim(

匿名用户 2021-10-21 14:51 数学类Mathematics

Let: +y2=1, and let the plane region enclosed by L be D, then calculate the volume of the rotating body formed when D ro... 查看全部