>>> import numpy as np
>>> a = np.array([[1, 2, 3], [3, 1, 2]])
>>> b = np.array([[5, 2, 6], [5, 1, 2]])
>>> a
array([[1, 2, 3],
       [3, 1, 2]])
>>> b
array([[5, 2, 6],
       [5, 1, 2]])
>>> c = a + b
>>> c
array([[6, 4, 9],
       [8, 2, 4]]
 
)
>>> c = (a+b)/2
>>> c
array([[ 3. ,  2. ,  4.5],
       [ 4. ,  1. ,  2. ]])
>>>

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