若X,Y均为实数,且满足X2+Y2+4X—6Y+13=0,求X,Y
问题描述:
若X,Y均为实数,且满足X2+Y2+4X—6Y+13=0,求X,Y
答
X2+Y2+4X—6Y+13=0,
(x+2)^2+(y-3)^2=0
所以x=-2,y=3