设f(x,y)是连续函数,则累次积分∫01dy∫1-y1+y2f(x,y)dx=()
A.∫01dx∫1-x1f(x,y)dy B.∫01dx∫11-xf(x,y)dy+∫12dx∫1√x-1f(x,y)dy C.∫12dx∫1√x-1f(x,y)dy+∫01dx∫x1(x,y)dy D.∫12dx∫x-1x2+1f(x,y)dy正确答案B
设f(x,y)是连续函数,则累次积分∫01dy∫1-y1+y2f(x,y)dx=()
A.∫01dx∫1-x1f(x,y)dy B.∫01dx∫11-xf(x,y)dy+∫12dx∫1√x-1f(x,y)dy C.∫12dx∫1√x-1f(x,y)dy+∫01dx∫x1(x,y)dy D.∫12dx∫x-1x2+1f(x,y)dy正确答案B