c = input("请输入C点的坐标,用英文逗号隔开:") c = c.split(",") # 分隔字符串 c = [float(c[i]) for i inrange(len(c))] p = input("请输入P点的坐标,用英文逗号隔开:") p = p.split(",") p = [float(p[i]) for i inrange(len(p))] r = float(input("请输入圆的半径:"))
while r ** 2 >= ((c[0]-p[0]) ** 2 + (c[1]-p[1]) ** 2) : print("P点不在圆外 , 请重新输入:") c = input("请输入C点的坐标,用英文逗号隔开:") c = c.split(",") c = [float(c[i]) for i inrange(len(c))] p = input("请输入P点的坐标,用英文逗号隔开:") p = p.split(",") p = [float(p[i]) for i inrange(len(p))] r = float(input("请输入圆的半径:")) else: x = Symbol("x") y = Symbol("y") ans = solve([(x-c[0]) ** 2 + (y - c[1]) ** 2 - r**2 , (y-c[1])*(y-p[1])+(x-c[0])*(x-p[0])] , [x,y]) # 第一个参数列表是方程组 , 第二个参数列表是未知数 print("Q1点的坐标:",ans[0]) print("Q2点的坐标:",ans[1])