两点式直线方程示例

GeoGebra 命令及参数

1. Vector(A, B) → u
2. Textfield(f) → inputBox1
3. Vector(X_1, Y_1) → v
4. Segment(f_x, F) → c
5. Segment(E, F) → d
6. Segment(A, X_1) → e
7. Segment(B, Y_1) → g
8. Segment(B, Y_1) → h
9. Sequence(-5, 5) → N
10. Zip((0, k), k, N) → x_*
11. Zip((2, f(k)), k, N) → y_*
12. Zip(Vector[A, B], A, x_*, B, y_*) → arr_*
13. Zip((y(A), y(B)), A, x_*, B, y_*) → Pt_*
14. Vector(A_0, B_0) → w
15. Textfield(a) → InputBox1
16. Vector(A_0, B_0) → b
17. Vector(C, D) → k