Basic ndarray operations

In the following examples, we will use an arr2D ndarray, as illustrated here:

arr2D

This is a 2 x 2 ndarray with values from 1 to 4, as shown here:

array([[1, 2],
       [3, 4]])

Scalar multiplication with an ndarray

Scalar multiplication with an ndarray has the effect of multiplying each element of the ndarray, as illustrated here:

arr2D * 4

The output is shown here:

array([[ 4,  8],
       [12, 16]])

Linear combinations of ndarrays

The following operation is a combination of scalar and ndarray operations, as well as operations between ndarrays:

2*arr2D + 3*arr2D

The output is what we would expect, as can be seen here:

array([[ 5, 10],
       [15, 20]])

Exponentiation of ndarrays

We can raise each element of the ndarray to a certain power, as illustrated here:

arr2D ** 2

The output is shown here...