How to SUBTRACT numerical value to each element of a matrix?

How to SUBTRACT numerical value to each element of a matrix?

How to SUBTRACT numerical value to each element of a matrix?

This recipe helps you SUBTRACT numerical value to each element of a matrix


Recipe Objective

How do you do mathematical operation on a matrix i.e on the elements of matrix?

So this is the recipe on how we can subtract something to each electment of a matrix.

Step 1 - Loading Library

We have imported numpy which is needed. import numpy as np

Step 2 - Creating Matrix

We have calculated a matrix on which we will perform operation. matrixA = np.array([[2, 3, 23], [5, 6, 25], [8, 9, 28]])

Step 3 - Substracting a number

We have made a function that will substract a number in this case 15 to every element of matrix. Finally we have printed the matrix. add_100 = lambda i: i - 15 vectorized_add_100 = np.vectorize(add_100) print(vectorized_add_100(matrixA)) So the output comes as

[[-13 -12   8]
 [-10  -9  10]
 [ -7  -6  13]]

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