Python - math.atanh() function

Last Updated : 28 May, 2020

Math module contains a number of functions which is used for mathematical operations. The math.atanh() function returns the hyperbolic arctangent of a number as a value. The value passed in this function should be between -0.99 to 0.99.

Syntax: math.atanh(x) Parameter:This method accepts only single parameters.

x :This parameter is the value to be passed to atanh()

Returns:This function returns the hyperbolic arctangent of a number as a value.

Below examples illustrate the use of above function: Example 1:

Python3

# Python code to implement
# the atanh()function
 
# importing "math"
# for mathematical operations  
import math   

# Return the hyperbolic arctangent of numbers 
print (math.asinh(0.17))
print (math.asinh(0.56))
print (math.asinh(0.245))
print (math.asinh(-0.3445))

Output:

0.1691916359351954
0.5342240739536623
0.24261291139707475
-0.33802589861247084

Example 2:

Python3

# Python code to implement
# the atanh()function
import math 
import numpy as np 
import matplotlib.pyplot as plt  
   
in_array = np.linspace(-np.pi / 3.5, np.pi / 3.5, 10)  

print("Input_Array : \n", in_array)

out_array = [] 
   
for i in range(len(in_array)): 
    out_array.append(math.atanh(in_array[i])) 
    i += 1
   
print("\nOutput_Array : \n", out_array)   
 
plt.plot(in_array, out_array, "go:")  
plt.title("math.atanh()")  
plt.xlabel("X")  
plt.ylabel("Y")  
plt.show()

Output:

Input_Array : 
 [-0.8975979 -0.6981317 -0.4986655 -0.2991993 -0.0997331  0.0997331
  0.2991993  0.4986655  0.6981317  0.8975979]

Output_Array : 
 [-1.459718446245292, -0.8636465496349238, -0.547528391492765, -0.30863994644251713, -0.10006575914805733, 0.10006575914805743, 0.30863994644251724, 0.5475283914927653, 0.863646549634924, 1.459718446245292]