设直角顶点的坐标是(x,y),根据题意得:
[y/(x+1)]*[y/(x-3)]=-1,即:y^2=-(x+1)(x-3),也就是:y^2+(x+1)(x-3)=0,
展开:x^2-2x+y^2-3=0,配方:(x-1)^2+y^2=4
你错在配方时:右边没有加1
设直角顶点的坐标是(x,y),根据题意得:
[y/(x+1)]*[y/(x-3)]=-1,即:y^2=-(x+1)(x-3),也就是:y^2+(x+1)(x-3)=0,
展开:x^2-2x+y^2-3=0,配方:(x-1)^2+y^2=4
你错在配方时:右边没有加1