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...06 14:05:15 補充： 剪1刀分成2段, 剪4刀分成5段 所以修改為: 5*5 - 4 = 21 Segments

if the altitude , whose intersection with AC is D , is x , then tan(∠ABD)=3/x , tan(∠CBD)=17/x . Then 22/7=(3/x+17/x)/1-(3/x)(17/x) . Then x=11,-51/11(X) . So the area is 20*11/2=110.

... by revolving the curve about the x-axisAns:S=4* segments =4∫2*pi*y*dL=8*pi∫sin^3(t)*3[cos(t)*sin(t)]*dt.......by Eq.(1...

... over curve C equals the line integral of A over the simple segment AB. A(a, 0, 0), B(a, 0, 2pi b) the parametric eq. of the segment ...

.... 任意三角形=any triangle3. 連(ex: "連"線段AB)=conect segment AB...4. 作=take, make,5. 推廣=extend(v), extension(n)6. 全等=congruent7. n邊...

...along curve x^2+y^2=25, clockwise; 2013-11-04 08:40:27 補充： C3: line segment from P to (4,4) then to Q; C4: line segment from P to...

﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣ 圖片參考：http://imgcld.yimg.com/8/n/HA05107138/o/20130813200057.jpg 2013-08-13 21:17:56 補充： (1) 這不就是Stokes theorem 嗎？http://en.wikipedia.org/wiki/Stokes%27_theorem (2) 圓形處於y=3（為常數），所以dy=0 (3...

...expression such as a cos γ merelyas a label for the length of a certain line segment .其他的證明（見下文）則是比較幾何式的，他們處理一個表示式，例如表示式cos...