绘制抛物线

GeoGebra 命令及参数

1. If(a ≟ 0, k, If[a ≟ 1 ∧ h ≟ 0, x^(2) + k, If[a ≠ 1 ∧ h ≟ 0, (a * x^(2)) + k, If[a ≟ 1 ∧ h ≠ 0, f(x + h) + k, (a * f(x + h)) + k]]]) → p
2. Intersect(p, xAxis) → A, B
3. Intersect(p, yAxis) → C
4. LaTeX(p, true, true) → text8
5. Textfield(h) → InputBox1
6. Textfield(k) → InputBox2
7. Textfield(a) → InputBox3
8. Point(xAxis) → D
9. OrthogonalLine(D, xAxis) → t
10. Intersect(p, t) → F
11. Intersect(f, t) → G
12. Segment(D, G) → f_1
13. Segment(G, F) → g_1
14. OrthogonalLine(G, yAxis) → h_1
15. OrthogonalLine(F, yAxis) → i_1
16. Intersect(h_1, yAxis) → H
17. Intersect(i_1, yAxis) → I
18. Segment(G, H) → j_1
19. Segment(F, I) → k_1
20. Point(eq1) → J
21. Point(eq1) → K
22. Segment(K, J) → l_1
23. LaTeX(p_1) → text17
24. TableText({{A1, B1, C1, D1, E1, F1, G1, H1}, {A2, B2, C2, D2, E2, F2, G2, H2}, {A3, B3, C3, D3, E3, F3, G3, H3}}, "|_cccccccc") → text2