human
fit three coefficients.
assistant
Here is a Python function to fit three coefficients

import numpy as np

def fit_three_coefficients(x, y, z):
    """Fits three coefficients to the given data."""
    return (x * y * z)

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

# Calling the function
print((fit_three_coefficients(x, y, z)))

#Example Output
# [  1   8  27  64 125]

#Remember to inspect code for bugs.