匿名用户 2022-01-01 17:08 数学类Mathematics

Find the particular solution of the differential equation y"(x y'2)=y'satisfying theinitial condition y(1)=y'(1)=1.

匿名用户 2022-01-01 17:07 数学类Mathematics

Let D be the unbounded region under the curve y=√ra-(a>l,0≤x<+∞)andabove x.(①)Find the volume V(a)of the rotating ... 查看全部

匿名用户 2022-01-01 17:06 数学类Mathematics

Let f(x)be a monotone differentiable function on the interval [0,1],and satisfyf-(t)dt cos t-sin Ldr,sin t cos tWhere f-... 查看全部

匿名用户 2021-12-27 09:36 经济Economics

The dry-cleaning industry generates pollution. Assume that there are no regulations on pollution and the dry-cleaning in... 查看全部

匿名用户 2021-12-14 05:37 物理类Physics

 A reference material contains 770 ± 40 Bq kg-1  40K, 695 ± 35 Bq kg-1  238 U in equilibrium with all decayproducts, 464... 查看全部

匿名用户 2021-12-14 05:39 物理类Physics

A stalagmite is formed by precipitation of calcium carbonate from ground water, containing dissolved uranium.Suppose tha... 查看全部

匿名用户 2021-12-26 20:45 数学类Mathematics

01000010Let A=compute the rank of A3 transpose.00010000

匿名用户 2021-12-24 20:55 数学类Mathematics

Let f(u,be a bivariate differentiable function,and=(),to calculatex一y

匿名用户 2021-12-24 20:54 数学类Mathematics

Compute the general solution of the second order nonhomogeneous linear differentialequation y"-4y'+3y 2e2x with constant... 查看全部

匿名用户 2021-12-24 20:54 数学类Mathematics

Let y =2x 3,to calculate y(a)(0)