human
relu activation function.
assistant
Here is a Python code to activate the relu

import numpy as np

def relu(x):
    r"""Returns `x` if `x` > 0, otherwise 0.

    Examples:

    >>> relu(3)
    3
    >>> relu(-3)
    0

    """
    return x * (x > 0)

# Enter the numpy array
x = np.array([1, 2, 3, 4, 5])

# Calling the function
y = relu(x)

# Printing the numpy array
print(x)
print(y)

#Example Output
# [1 2 3 4 5]
# [1 2 3 4 5]

#Remember to inspect code for bugs.