若抛物线y=x?-kx+k-1的顶点在y轴上,则k=___________,此时抛物线y=x?-kx+k-1的顶点坐标为________;若抛物线y
问题描述:
若抛物线y=x?-kx+k-1的顶点在y轴上,则k=___________,此时抛物线y=x?-kx+k-1的顶点坐标为________;若抛物线y
答
若抛物线y=x-kx+k-1的顶点在y轴上,则k=___________,此时抛物线y=x-kx+k-1的顶点坐标为________;若抛物线y=x-2(k+1)x+16的顶点在x轴上,则k=________,此时,抛物线y=x-2(k+1)x+16的顶点是__________.