Working with vector elements
Working with vector elements is the same as with list elements, you can access elements by their index, and also make slices.
Example
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import numpy as np
V = np.array((1,2,3,4))
print(V[0]) # 1
print(V[1]) # 4
print(V[1:2]) # [2]
print(V[::2]) # [1 3]
