线性回归残差与残差平方

GeoGebra 命令及参数

1. Centroid(Polygon[{A, B, C}]) → M
2. OrthogonalLine(B, xAxis) → g
3. OrthogonalLine(A, xAxis) → h
4. OrthogonalLine(C, xAxis) → i
5. Line(P, M) → f
6. Intersect(f, g) → E
7. Intersect(f, h) → F
8. Intersect(f, i) → G
9. Segment(B, E) → j
10. Segment(A, F) → k
11. Segment(G, C) → l
12. Midpoint(j) → H
13. Midpoint(k) → I
14. Midpoint(l) → J
15. ConvexHull({A, B, C}) → graph1
16. Polygon(E, B, 4) → poly1, m, n, p, q, D, K
17. Polygon(A, F, 4) → poly2, r, s, t, a, L, N
18. Polygon(G, C, 4) → poly3, b, c, d, e, O, Q
19. FitLineY({A, B, C}) → f_1
20. Distance(P, f_1) → o