上述solve_quadratic_equation的参数改为polynomial_function

`solve_quadratic_equation`函数如果要改为接受`polynomial_function`作为参数，意味着它将处理一般形式的多项式方程，而非仅限于二次方程。`polynomial_function`应该是一个能够返回多项式系数的函数，例如`(a, b, c)`这样的元组，其中`a`, `b`, 和 `c` 分别对应二次多项式`ax^2 + bx + c`的系数。

新的函数定义可能会像这样：

def solve_polynomial_equation(polynomial_function):
    a, b, c = polynomial_function()
    discriminant = b**2 - 4*a*c
    if discriminant > 0:
        x1 = (-b + discriminant**0.5) / (2*a)
        x2 = (-b - discriminant**0.5) / (2*a)
        return x1, x2
    elif discriminant == 0:
        x = -b / (2*a)
        return [x]
    else:  # complex roots for negative discriminant
        real_part = -b / (2*a)
        imaginary_part = discriminant**0.5 / (2*a)
        return [real_part + imaginary_part * 1j, real_part - imaginary_part * 1j]

# 示例
quadratic_coefficients = lambda: (1, -3, 2)
solutions = solve_polynomial_equation(quadratic_coefficients)