同样,曲顶柱的底为 D={(xy)W1(y)≤x≤v2(y)c≤y≤d} 则其体积可按如下两次积分计算y V=l f(x,y)do D x-v2(y x=vi(y y2(y f(r,y)dx ]dy yk v1(y) (“dy() f(x, y)dx HIGH EDUCATION PRESS 机动目录上页下页返回结束y d c o x ( ) 2 x = y ( ) 1 x = y y y d c [ ]d  = D = (x, y) 1 ( y)  x  2 ( y), c  y  d  同样, 曲顶柱的底为 则其体积可按如下两次积分计算  = D V f (x, y)d f x y x y y ( , )d ( ) ( ) 2 1     机动 目录 上页 下页 返回 结束