numpy.expm1() in Python

# Python program explaining
# expm1() function

import numpy as np

in_array = [1, 3, 5]
print ("Input array : \n", in_array)

exp_values = np.exp(in_array)
print ("\nExponential value of array element : "
       "\n", exp_values)

expm1_values = np.expm1(in_array)
print ("\n(Exponential value of array element) - (1) "
       ": \n", expm1_values)

# Python program showing
# Graphical representation of 
# expm1() function

import numpy as np
import matplotlib.pyplot as plt

in_array = [1, 1.2, 1.4, 1.6, 1.8, 2]
out_array = np.expm1(in_array)

print("out_array : ", out_array)

y = [1, 1.2, 1.4, 1.6, 1.8, 2]
plt.plot(in_array, y, color = 'blue', marker = "*")

# red for numpy.expm1()
plt.plot(out_array, y, color = 'red', marker = "o")
plt.title("numpy.expm1()")
plt.xlabel("X")
plt.ylabel("Y")
plt.show()