单选题 难度 3 二次积分 ∫02dx∫0x2f(x,y) dy\int_0^2 dx\int_0^{x^2} f(x,y)\,dy∫02dx∫0x2f(x,y)dy 写成另一种次序的积分为（ ） A 选项 A ∫04dy∫y2f(x,y) dx\int_0^4 dy\int_{\sqrt{y}}^2 f(x,y)\,dx∫04dy∫y2f(x,y)dx B 选项 B ∫04dy∫0yf(x,y) dx\int_0^4 dy\int_0^{\sqrt{y}} f(x,y)\,dx∫04dy∫0yf(x,y)dx C 选项 C ∫04dy∫x22f(x,y) dx\int_0^4 dy\int_{x^2}^2 f(x,y)\,dx∫04dy∫x22f(x,y)dx D 选项 D ∫04dy∫2yf(x,y) dx\int_0^4 dy\int_2^{\sqrt{y}} f(x,y)\,dx∫04dy∫2yf(x,y)dx 答案与解析 微信扫描二维码 免费获取正确答案和解析
