定积分、面积与黎曼和

GeoGebra 命令及参数

1. Point(xAxis) → B
2. Point(xAxis) → A
3. Sequence(a + (i * Δx) + (Δx * random()), i, 0, n - 1) → RandList
4. BarChart(a, b, f(RandList)) → RandApprox
5. Sequence(a + (i * Δx) + (m * Δx), i, 0, n - 1) → xList
6. BarChart(a, b, f(xList)) → Approx
7. Integral(f, a, b) → c
8. Sequence(a + (i * Δx), i, 0, n) → xList2
9. Sequence(Polygon[(Element[xList2, i], 0), (Element[xList2, i + 1], 0), (Element[xList2, i + 1], f(Element[xList2, i + 1])), (Element[xList2, i], f(Element[xList2, i])), (Element[xList2, i], 0)], i, 1, n) → trap
10. Sum(trap) → TrapArea