定积分与概率分布

GeoGebra 命令及参数

1. Point(Sequence[A + (i, 0), i, 1, 20, 1]) → B
2. Vector(A, C1) → u
3. Sequence(A + (i * UnitVector[Segment[A, C1]]), i, 1, 20, 1) → UPoints
4. DynamicCoordinates(C1, x(ClosestPoint[UPoints, C1]), y(ClosestPoint[UPoints, C1])) → C
5. Vector(B, C2) → v
6. Sequence((x(B) + (Length[v] * cos(t°)), y(B) + (Length[v] * sin(t°))), t, 0, 355, 5) → VPoints
7. DynamicCoordinates(C2, x(ClosestPoint[VPoints, C2]), y(ClosestPoint[VPoints, C2])) → C'
8. Segment(A, C) → f
9. Intersect(Circle[A, f], Line[B, C']) → G, G'
10. Segment(A, B) → g
11. Segment(C', B) → h
12. Polygon(A, B, G) → t1, g_1, a, b
13. Polygon(A, B, G') → t2, i, j, k
14. If(C ≟ G ∧ C' ≟ G, true, false) → closed1
15. If(C ≟ G' ∧ C' ≟ G', true, false) → closed2
16. Angle(C', B, A) → α
17. Intersect(Circle[D, 5], Ray[E, Rotate[D, (-(45°)), E]], 2) → F
18. Polygon(D, E, F) → t3, f_1, d_1, e
19. Angle(F, E, D) → β