Python – math.tanh() function
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:
import math
a = math.pi / 6
print (math.tanh( 7 ))
print (math.tanh( 56 ))
print (math.tanh( 2.45 ))
print (math.tanh( 1 ))
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Output:
0.9999983369439447
1.0
0.985216917311436
0.7615941559557649
Example 2:
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()
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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]
Last Updated :
28 May, 2020
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