向量空间的并集与交集
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①本范例演示了向量空间的并集与交集的几何表示;②涉及的核心数学概念包括向量空间、并集运算、交集运算;③作图要点——从下方『构造摘要』提炼用到了Segment(线段)、Intersect(交点)、Point(点)、Vector(向量)、Polygon(多边形)等GeoGebra命令/对象;④适合大学数学专业学生或对线性代数感兴趣的学习者使用。
GeoGebra 命令及参数
Segment(A, B) → fSegment(B, C) → gSegment(C, D) → hSegment(D, A) → iSegment(E, F) → jSegment(F, G) → kSegment(G, H) → l_1Segment(H, E) → mIntersect(i, m) → IIntersect(g, k) → JSegment(I, J) → lIntersect(i, k) → KSegment(K, F) → pIntersect(g, m) → LSegment(L, C) → qIntersect(g, k) → MSegment(M, G) → rIntersect(g, m) → NIntersect(l_1, m) → O_1Segment(N, O_1) → sIntersect(i, m) → PIntersect(j, m) → QSegment(P, Q) → tIntersect(g, k) → RIntersect(f, g) → SSegment(R, S) → aPoint(l) → TVector(T, U) → uVector(T, V) → vIntersect(j, m) → WIntersect(j, k) → ZIntersect(k, l_1) → A_1Polygon(W, Z, A_1, B_1) → q1, w, z_1, a_1, b_1Intersect(f, i) → C_1Intersect(f, g) → D_1Intersect(g, h) → E_1Polygon(C_1, D_1, E_1, F_1) → q2, c_1, d_1, e_1, f_1Point(l) → O