a = 0 (slider from 0 to 20)
f(x) = x^(2 / 3) + ((0.9 * (3.3 - x^(2))^(0.5)) * sin(((a * π) * x)))
A = (-3.3297920348096035, -0.24795828823922947)
B = (-1.3488496422866136, -0.24795828823922947)
C = (1.5847187263711842, -0.23688634968219519)
D = (3.7026179454633374, -0.23688634968219519)
text1 = If(a < 3, "相遇", a < 6, "相识", a < 9, "相知", a < 12, "相爱", "相守")

Tool: 简易坐标系
请选择原点，分别输入：x最小、最大值，y最小、最大值
Input: A, a, b, c, d
Output: B, C, O, u, v

$\huge\textcolor{}{x}$

$\huge\textcolor{}{y}$

$\Large\textcolor{}{O}$

A: (0, 0)
u = Vector(A + (a - 1, 0), A + (b + 1, 0))
v = Vector(A + (0, c - 1), A + (0, d + 1))
B: A + (b + 1, 0)
C: A + (0, d + 1)
O: A