黎曼和与积分 by hpp3

GeoGebra 命令及参数

1. CreatePanel(240) → poly1, a
2. SelectedElement(Function) → f
3. Point(f) → A
4. Point(f) → B
5. LeftSum(f, x(A), x(B), n) → LeftSum_1
6. Integral(f, x(A), x(B)) → Integral_1
7. LowerSum(f, x(A), x(B), n) → UpperSum_1
8. LowerSum(f, x(A), x(B), n) → LowerSum
9. Sequence(x(A) + (i * dx), i, 0, n) → subint
10. Take(subint, 2, n + 1) → right
11. Take(subint, 1, n) → left
12. Sequence(Polygon[(Element[left, i], 0), (Element[right, i], 0), (Element[right, i], Element[rightheights, i]), (Element[left, i], Element[rightheights, i])], i, 1, n) → rightRect