牛顿-割线法演示

GeoGebra 命令及参数

1. Iteration(NEWT[f, x(z), y(z)], z, {(a, b)}, n - 1) → PAIR
2. Line(b_n, fb_n) → h
3. Line(a_n, fa_n) → i
4. Intersect(h, i) → LinearFocus
5. Line(zero, LinearFocus) → j
6. Line((0, x(PAIR)), (0, y(PAIR))) → c
7. Intersect(j, c) → Secpoint
8. Point(yAxis) → x_0
9. Vector(x_0, B) → u
10. Textfield(f) → inputBox1
11. Textfield(f) → inputBox2
12. Textfield(a) → inputBox3
13. Textfield(b) → inputBox4
14. Segment((y(a_n), 0), (y(b_n), 0)) → d
15. Vector(SecP_n, fm_n) → mArr_n
16. Vector(b_n, fb_n) → v
17. Vector(a_n, fa_n) → w
18. Roots(f, a, b) → Root,
19. Vector(REMD, fER) → g
20. Segment((0, x(PAIR)), (0, y(PAIR))) → k