常数倍导数法则：导数计算与作图演示

GeoGebra 命令及参数

1. Textfield(f) → InputBox1
2. Textfield(a) → InputBox3
3. Textfield(c) → InputBox2
4. Vector(A, B) → u
5. Vector((a, 0), (a, (sgn(c) * f(a)) + (e * (cf(a) - (sgn(c) * f(a)))))) → v
6. Vector((a, f(a)), (a + 1, f(a))) → w
7. Vector((a, cf(a)), (a + 1, cf(a))) → i
8. Vector((a + 1, f(a)), (a + 1, t_{1}(a + 1))) → j
9. Vector((a + 1, cf(a)), (a + 1, t_{2}(a + 1))) → m
10. Vector((a, 0), (a, f'(a))) → p
11. Vector((a, 0), (a, cf'(a))) → q