Python math.tanh() function (original) (raw)

Last Updated : 28 May, 2020

Math module contains a number of functions which is used for mathematical operations. The math.tanh() function returns the hyperbolic tangent value of a number.

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

• **x :**This parameter is the value to be passed to tanh() **Returns:**This function returns the hyperbolic tangent value of a number.

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

Python3 `

Python code to implement

the tanh()function

importing "math"

for mathematical operations

import math

a = math.pi / 6

Return the hyperbolic cosine value of numbers

print (math.tanh(7)) print (math.tanh(56)) print (math.tanh(2.45)) print (math.tanh(1))

`

Output:

0.9999983369439447 1.0 0.985216917311436 0.7615941559557649

Example 2:

Python3 `

Python code implementation of

the tanh() function

import math import numpy as np import matplotlib.pyplot as plt

in_array = np.linspace(1, np.pi**2, 30)

out_array = []

for i in range(len(in_array)): out_array.append(math.tanh(in_array[i])) i += 1

print("Input_Array : \n", in_array)
print("\nOutput_Array : \n", out_array)

plt.plot(in_array, out_array, "go-")
plt.title("math.tanh()")
plt.xlabel("X")
plt.ylabel("Y")
plt.show()

`

Output:

Input_Array : [1. 1.30584843 1.61169686 1.91754528 2.22339371 2.52924214 2.83509057 3.14093899 3.44678742 3.75263585 4.05848428 4.3643327 4.67018113 4.97602956 5.28187799 5.58772641 5.89357484 6.19942327 6.5052717 6.81112012 7.11696855 7.42281698 7.72866541 8.03451384 8.34036226 8.64621069 8.95205912 9.25790755 9.56375597 9.8696044 ]

Output_Array : [0.7615941559557649, 0.8632211720796424, 0.9234103903092679, 0.9577145746297974, 0.976839065640874, 0.9873698967991443, 0.9931292036581836, 0.9962672085447057, 0.9979734925362752, 0.9989002523578501, 0.9994033141272595, 0.9996762956932671, 0.9998244001772529, 0.9999047456204971, 0.9999483300729858, 0.999971972367574, 0.9999847968832987, 0.9999917533498457, 0.9999955267638955, 0.9999975735815636, 0.9999986838379343, 0.9999992860744392, 0.9999996127455353, 0.9999997899416726, 0.9999998860581267, 0.9999999381945465, 0.9999999664748882, 0.9999999818149847, 0.9999999901359082, 0.999999994649424]