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Sigmoid_Function.py

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'''

let's build the sigmoid function

'''

# Sigmoid Function

# using function from math lib

import numpy as np

import math

def sigmoid_math(x):

"""

Compute sigmoid of x using math

Arguments:

x -- A scalar

Return:

s -- sigmoid(x)

"""

s = 1/(1+math.exp(-x))

return s

# using function from numpy lib

def sigmoid_numpy(x):

"""

Compute the sigmoid of x using numpy

Arguments:

x -- A scalar or numpy array of any size

Return:

s -- sigmoid(x)

"""

s = 1/(1+np.exp(-x))

return s