Question: 'ReLU' stands for 'rectified linear unit' and is a common activation function used in artifical neural networks. It is defined as f ( x )

'ReLU' stands for 'rectified linear unit' and is a common activation function used in artifical neural networks.
It is defined as f(x)= x, if x >0, and f(x)=0 if x <=0.
Write a function named relu that is a Python implementation of ReLU

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