∵AC⊥BH ∴kac=-1/kbh=-2
∴ AC的直线方程 y-ya=kac(x-xa) => y-1=-2(x-5) => 2x+y=11
和CM所在方程联立 2x-y=0 => 4x=11 => x=11/4
=> y=22/4
∴C点坐标 C(11/4 ,22/4)
∵AC⊥BH ∴kac=-1/kbh=-2
∴ AC的直线方程 y-ya=kac(x-xa) => y-1=-2(x-5) => 2x+y=11
和CM所在方程联立 2x-y=0 => 4x=11 => x=11/4
=> y=22/4
∴C点坐标 C(11/4 ,22/4)