• 6 小时前
  • 0

    赞同
  • 2

    回答

Let f() be continuous function, and=z(x,y), determined byx2+y2+z=f(x+y-t)dt, to calculate az az

  • 1 天前
  • 0

    赞同
  • 1

    回答

Lety=3e-x+(x-2)ex be the particular solution of the second-order- nonhomogeneous linear differential equation with const... 查看全部

  • 1 天前
  • 0

    赞同
  • 1

    回答

Let the plane figure be determined by x2+y2≤2 x and≥x, and calculate the volume formula of the rotating body obtained by... 查看全部

  • 2 天前
  • 0

    赞同
  • 1

    回答

function(t)in(o,+∞ is the second order continuous differentiable, function=f (vx2+y2) if meet? =, if f()= 0, calculate f... 查看全部

  • 2 天前
  • 0

    赞同
  • 1

    回答

Let the function f(x) ( 0) continuously differentiable, and f(O)=1, and given that the area value of the graph formed by... 查看全部

  • 2 天前
  • 0

    赞同
  • 1

    回答

Proof: when>0,x2>(1+x)n2(1+x).

  • 2 天前
  • 0

    赞同
  • 1

    回答

()-cosx Let g(x) be second differentiable, and f(x)=x,x≠0 a,x=0 (1)Evaluate the constant a such that f(x) is continuous ... 查看全部

  • 2 天前
  • 0

    赞同
  • 1

    回答