曲面[imgclass="ans-formula-moudle"data="%7...=1,x=0,y=0所截下那部分的面积为
[imgsrc="http://p.ananas.chaoxing.com/star3/origin/70f6d81494ba4c8b0f79941ccf98ae9f.png"]
举一反三
- 曲面=2xy被平面x+y=1,x=0,y=0所截下那部分的面积为[imgclas...anas/latex/p/10391">
- 双曲抛物面z=xy被柱面x^2+y^2=1(x>=0,y>=0)截下部分的面积
- V是曲面2([imgclass="ans-formula-moudle"data...ab848540a3daa.png"]=
- [imgclass="ans-formula-moudle"data="%7B%...nas/latex/p/175040">
- What will be the values of ans, x, and y after the following statements are executed?执行以下语句后，ans，x和y的值是什么？int ans = 35, x = 50, y =50;if ( x >;= y){ans = x + 10;x -=y;} else {ans = y + 10;y += x;} A: ans = 60, x = 50, y =100 B: ans = 60, x =0, y =50 C: ans = 45, x = 50, y = 0 D: ans = 45, x = 50, y = 50
内容
- 0
y=x^2与x=1,x=4,y=0,所围成的面积,
- 1
若曲面\(\sum\)为平面\(x = 0,y = 0,z = 0\)及平面\(x + y + z = 1\)所围成的四面体的整个边界曲面，则曲面积分\(\int\!\!\!\int\limits_\Sigma {xyzdS = {1 \over {40}}} \) 。
- 2
由曲线y=x3，y=0，x=－1，x=l所围图形的面积为____。
- 3
int x = 1， y =6； A: x = 6 y = 0 B: x = 7 y = 0 C: x = 6 y = -1 D: x = 7 y = -1 E: Compilation fails.
- 4
设X，Y为两个随机变量，且P{X ³0，Y ³ 0} = 3/7 , P{X ³ 0} = P{ Y ³ 0} = 4/7 ,则P{max(X, Y) ³ 0} = ( )． A: 1/7 B: 3/7 C: 4/7 D: 5/7