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Python program to fit three coefficients.
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Here is a Python program to fit three coefficients

import numpy as np

def _fit_three_coefficients(x, y, a, b, c):
    """
    Fit three coefficients.
    """
    return a * x ** 2 + b * x + c

# Enter the x and y
x = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
y = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

# Enter the coefficients
a = 1
b = 2
c = 3

# Calling the function
print((_fit_three_coefficients(x, y, a, b, c)))

#Example Output
# [  6  11  18  27  38  51  66  83 102 123]

#Remember to inspect code for bugs.