init

GGB_22.txt

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+[修正报告]
+无调整。
+
+[坐标摘要]
+A: (0, 0)
+B: (4, 0)
+O: (2, 0)
+O_prime: (2, 1)  // 初始位置，y坐标由滑块k控制
+
+[Geogebra指令]
+k = Slider(-5, 5, 1, 1, 150, false, true, false, false)
+A = (0, 0)
+B = (4, 0)
+s = Segment(A, B)
+O = Midpoint(s)
+O_prime = (2, k)
+c1 = Circle(O, A)
+c2 = Circle(O_prime, A)
+dist_O_prime_A = Distance(O_prime, A)
+dist_O_prime_B = Distance(O_prime, B)
+sum_dist = dist_O_prime_A + dist_O_prime_B
+len_AB = Distance(A, B)
+condition = sum_dist > len_AB