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Python – scipy.linalg.cosm
The cosm() function of scipy.linalg package is used to compute the cosine of an input matrix. This routine uses expm to compute the matrix exponentials.
Syntax
scipy.linalg.cosm(x)
where x is the input array.
Example 1
Let us consider the following example −
# Import the required libraries from scipy import linalg import numpy as np # Define the input array q = np.array([[121 , 10] , [77 , 36]]) print("Array Input :\n", q) # Calculate the Cosine r = linalg.cosm(q) # Display the Cosine of matrix print("Cosine of Q: \n", r)
Output
The above program will generate the following output −
Array Input : [[121 10] [ 77 36]] Cosine of Q: [[-0.89675008 -0.00369979] [-0.02848841 -0.86530184]]
Example 2
Let us take another example −
# Import the required libraries from scipy import linalg import numpy as np # Define the input array x = np.ones((3, 3)) print("Array Input :\n", x) # Calculate the Cosine a = linalg.cosm(x) # Display the Cosine of matrix print("Cosine of X: \n", a)
Output
The above program will generate the following output −
Array Input : [[1. 1. 1.] [1. 1. 1.] [1. 1. 1.]] Cosine of X: [[ 0.33666917 -0.66333083 -0.66333083] [-0.66333083 0.33666917 -0.66333083] [-0.66333083 -0.66333083 0.33666917]]
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