导数测试：二次函数与切线分析

GeoGebra 命令及参数

1. Derivative(f, x) → f_{x}
2. Derivative(f, y) → f_{y}
3. Derivative(f_{x}, x) → f_{xx}
4. Derivative(f_{y}, y) → f_{yy}
5. Derivative(f_{x}, y) → f_{xy}
6. CurveCartesian(t, t, (d * t^(2)), t, -3, 3) → mixedcurve1
7. CurveCartesian(t, (-t), ((-d) * t^(2)), t, -3, 3) → mixedcurve2
8. CurveCartesian(t, 0, ((1 / 2 * b) * t^(2)), t, -3, 3) → xxcurve
9. CurveCartesian(0, t, ((1 / 2 * c) * t^(2)), t, -3, 3) → yycurve
10. Polygon(A, B, E, D) → q1, a_1, b_1, e_1, d_1
11. Angle(v, u) → α
12. Polygon(A, B, E, D) → q2, a_2, b_2, e_2, d_2