三角形与圆的切线

GeoGebra 命令及参数

1. Point(yAxis) → A_1
2. Vector(A_1, B) → u
3. Segment((0, -5), (0, a_1)) → c
4. Segment((0, a_1), (0, a_2)) → d
5. Segment((0, a_2), (0, 5)) → e
6. Textfield(f_1) → inputBox1
7. Textfield(f_2) → inputBox2
8. Textfield(f_3) → inputBox3
9. Textfield(f_1) → inputBox4
10. Textfield(f_2) → inputBox5
11. Sequence(Vector[(0, k), (2, f(k))], k, -3, 3, 0.5) → list1
12. Sequence((k, f(k)), k, -3, 3, 0.5) → list2
13. Textfield(f_3) → inputBox6