# 3D-vectorveld

import matplotlib.pyplot as plt
import numpy as np

x, y, z = np.meshgrid (np.arange (-0.4, 0.4, 0.1), np.arange (-0.4, 0.4, 0.1), np.arange (-0.4, 0.4, 0.1))
 
a = 2
b = 6

u = a * (x * y + z**3)
v = x**2 + 3 * z**2
w = b * (y * z + x * z**2)

plt.figure (figsize = (8, 8))

ax = plt.axes (projection = "3d")

q = ax.quiver (x, y, z, u, v, w, color = "red", length = 0.25)

plt.show ()