矩阵与行列式的几何应用

GeoGebra 命令及参数

1. Textfield(a_1) → InputBox1
2. Textfield(b_1) → InputBox2
3. Textfield(c_1) → InputBox3
4. Textfield(d_1) → InputBox4
5. Textfield(a_2) → InputBox5
6. Textfield(a_3) → InputBox6
7. Textfield(b_2) → InputBox7
8. Textfield(b_3) → InputBox8
9. Textfield(c_2) → InputBox9
10. Textfield(c_3) → InputBox10
11. Textfield(d_2) → InputBox11
12. Textfield(d_3) → InputBox12
13. IntersectPath(c, b) → f
14. IntersectPath(c, a) → g
15. Intersect(f, g) → A
16. Intersect(f, g) → B
17. Intersect(g, f) → C
18. IntersectPath(b, a) → h