寻找公式
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①本范例演示如何通过 GeoGebra 动态构建图形并推导相关公式;②涉及核心数学概念包括函数、周长、旋转、矩形、一般四边形及矩阵运算;③作图要点:运用了 Sequence(数列)、Point(点)等命令,创建了 f, g, h, i, j, k, l, L_6 至 L_0, A_1 至 B_7, T_0 至 T_6 等对象进行图形构建与变换;④适合高中数学教学,用于函数、几何变换及矩阵应用的实例演示。
GeoGebra 命令及参数
Sequence(Segment[(i, 6.1), (i, 5.9)], i, -6, 6) → L_6Sequence(Segment[(i, 5.1), (i, 4.9)], i, -6, 6) → L_5Sequence(Segment[(i, 2.1), (i, 1.9)], i, -6, 6) → L_2Sequence(Segment[(i, 3.1), (i, 2.9)], i, -6, 6) → L_3Sequence(Segment[(i, 4.1), (i, 3.9)], i, -6, 6) → L_4Sequence(Segment[(i, 1.1), (i, 0.9)], i, -6, 6) → L_1Sequence(Segment[(i, 0.1), (i, -0.1)], i, -6, 6) → L_0Point(f) → A_1Point(g) → A_2Point(h) → A_3Point(i) → A_4Point(j) → A_5Point(k) → A_6Point(k) → B_6Point(l) → A_7Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], -0.33)], i, -6, 6) → T_0Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 0.67)], i, -6, 6) → T_1Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 1.67)], i, -6, 6) → T_2Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 2.67)], i, -6, 6) → T_3Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 3.67)], i, -6, 6) → T_4Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 4.67)], i, -6, 6) → T_5Sequence(Text["" + (i), (If[i < 0, i - 0.15, i - 0.08], 5.67)], i, -6, 6) → T_6