import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
x = np.linspace(-50, 50, 1000)
y = np.linspace(-50, 50, 1000)
X, Y = np.meshgrid(x, y)
Z = (X2)/4+(Y2)/6
ax.plot_surface(X, Y, Z, cmap='viridis')
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
ax.set_title('$(\frac{x2}{4}+\frac{y2}{6})=z$')
ax.set_zlim(0, 1000)
plt.show()