求下列抛物线的焦点坐标和准线方程:x+y^2=0
问题描述:
求下列抛物线的焦点坐标和准线方程:x+y^2=0
答
y^2=-x
故焦点坐标为(-1/4,0) 准线为x=1/4
求下列抛物线的焦点坐标和准线方程:x+y^2=0
y^2=-x
故焦点坐标为(-1/4,0) 准线为x=1/4