直方图：热身练习1

GeoGebra 命令及参数

1. Polygon((0, 0), (10, 0), (10, y(A)), (0, y(A))) → q1, i, m, n, p
2. Polygon((10, 0), (20, 0), (20, y(B)), (10, y(B))) → q2, q, r, s, t
3. Polygon((20, 0), (30, 0), (30, y(C)), (20, y(C))) → q3, f_1, g_1, h_1, i_1
4. Polygon((30, 0), (40, 0), (40, y(D)), (30, y(D))) → q4, j_1, k_1, l_1, m_1
5. Polygon((40, 0), (50, 0), (50, y(E)), (40, y(E))) → q5, n_1, p_1, q_1, r_1
6. Polygon((50, 0), (60, 0), (60, y(F)), (50, y(F))) → q6, s_1, t_1, b_1, c_1
7. Polygon((60, 0), (70, 0), (70, y(G)), (60, y(G))) → q7, d_1, e_1, f_2, g_2
8. Polygon((70, 0), (80, 0), (80, y(H)), (70, y(H))) → q8, h_2, i_2, j_2, k_2
9. Polygon((80, 0), (90, 0), (90, y(I)), (80, y(I))) → q9, l_2, m_2, n_2, p_2
10. Polygon((90, 0), (100, 0), (100, y(J)), (90, y(J))) → q10, q_2, r_2, s_2, t_2