设f(x,y)为连续函数,且f(x,y)=,则f(x,y)=__________.

admin2022-06-30  45

问题 设f(x,y)为连续函数,且f(x,y)=,则f(x,y)=__________.

选项

答案y2+[*]

解析f(x,y)dxdy=A,
    则f(x,y)=y2+Ax,两边积分得
    A=(y2+Ax)dxdy=y2dxdy=x2dxdy
       =1/2(x2+y2)dxdy=1/2∫0dθ∫0ar3dx=
    故f(x,y)=y2+x.
转载请注明原文地址:https://jikaoti.com/ti/M6hRFFFM
0

最新回复(0)