经典开盒问题优化可视化
几何画板及绘图内容加载中,请稍等……
①本范例通过动态演示一个经典的开盒问题,直观展示如何通过调整矩形长宽比来最大化盒子体积;②涉及的核心数学概念包括微积分中的最值优化、二次函数、平面几何及三维向量;③作图要点提炼自GeoGebra命令:Polygon(多边形)、Point(点)、Segment(线段)、Rotate(旋转)、Line(直线)、Intersect(交点);④适合高中及以上学生及需要理解优化问题的学习者使用。
GeoGebra 命令及参数
Polygon(A, B, D, C) → q1, a, b, d, c_1Point(Circle[C, c]) → ESegment(C, E) → fPolygon(E, C, 4) → poly1, g, h, i, j, F, GPoint(Circle[A, c]) → HSegment(A, H) → kPolygon(A, H, 4) → poly2, l, m, n, p, I, JPolygon(K, B, 4) → poly3, q, r, s, t, L, MPolygon(N, D, 4) → poly4, e, f_1, g_1, h_1, O, PSegment(G, P) → i_1Segment(P, M) → j_1Segment(M, J) → k_1Segment(I, G) → l_1Point(Circle[S, 8.5 - (2 * c)]) → USegment(S, U) → m_1Rotate(U, 45°, S) → U'Segment(S, Q) → n_1Segment(Q, R) → p_1Segment(R, T) → q_1Segment(T, S) → r_1Segment(S, U') → s_1Line(U', r_1) → t_1Line(T, s_1) → a_1Line(R, s_1) → b_1Intersect(t_1, a_1) → VLine(V, q_1) → d_1Intersect(b_1, d_1) → WSegment(U', V) → e_1Segment(V, T) → f_2Segment(V, W) → g_2Segment(W, R) → h_2