特征值与特征向量的几何意义

GeoGebra 命令及参数

1. Distance(A', f) → d1
2. Distance(A', g) → d3
3. Distance(B', g) → d2
4. Distance(B', f) → d4
5. DynamicCoordinates(A', If[d1 < 0.35 ∧ h, x(A'), If[d3 < 0.35 ∧ h, x(A'), x(A')]], If[d1 < 0.35 ∧ h, f(x(A')), If[d3 < 0.35 ∧ h, g(x(A')), y(A')]]) → A
6. Vector((0, 0), A) → u
7. DynamicCoordinates(B', If[d2 < 0.35 ∧ h, x(B'), If[d4 < 0.35 ∧ h, x(B'), x(B')]], If[d2 < 0.35 ∧ h, g(x(B')), If[d4 < 0.35 ∧ h, f(x(B')), y(B')]]) → B
8. Vector((0, 0), B) → v
9. Sequence(Segment[T3 + (i * (T4 - T3) / n), T1 + (i * (T2 - T1) / n)], i, 0, n) → ver
10. Sequence(Segment[T3 + (i * (T1 - T3) / n), T4 + (i * (T2 - T4) / n)], i, 0, n) → hor
11. Textfield(a) → InputBox1
12. Textfield(b) → InputBox2
13. Textfield(c) → InputBox3
14. Textfield(d) → InputBox4