如何在Python中从椭圆的一般方程绘制椭圆

import numpy as np
import matplotlib.pyplot as plt

# 椭圆的一般方程：Ax^2 + By^2 + Cx + Dy + E = 0
A = 4
B = 9
C = 0
D = 0
E = -36

# 计算椭圆的参数
h = -C / (2 * A)
k = -D / (2 * B)
a = np.sqrt((E / A) + h**2)
b = np.sqrt((E / B) + k**2)

# 生成椭圆上的点
theta = np.linspace(0, 2*np.pi, 100)
x = h + a * np.cos(theta)
y = k + b * np.sin(theta)

# 绘制椭圆
plt.plot(x, y)
plt.axis('equal')
plt.xlabel('x')
plt.ylabel('y')
plt.title('Ellipse')
plt.grid(True)
plt.show()