Plotting 3D graphs

from mpl_toolkits import mplot3d

from matplotlib import pyplot as plt

import numpy as np

import pandas as pd

import math

x,y=np.meshgrid(range(-100,100),range(-100,100))

z=(x**4+y**4)

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

ax.plot_surface(x, y, z,cmap='viridis')

plt.show()