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Merged
merged 2 commits into from
Oct 1, 2019
Merged

maths-polynomial_evalutation #1214

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d20c959
maths-polynomial_evalutation
msk4862 Sep 30, 2019
e84b7bd
added doctest and removed redundancy
msk4862 Oct 1, 2019
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25 changes: 25 additions & 0 deletions maths/polynomial_evaluation.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
def evaluate_poly(poly, x):
"""
Objective: Computes the polynomial function for a given value x.
Returns that value.
Input Prams:
poly: tuple of numbers - value of cofficients
x: value for x in f(x)
Return: value of f(x)

>>> evaluate_poly((0.0, 0.0, 5.0, 9.3, 7.0), 10)
79800.0
"""
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Please add a doctest:

    >>> evaluate_poly((0.0, 0.0, 5.0, 9.3, 7.0), 10)
    79800.0

Then makes sure it passes locally with: python3 -m doctest -v maths/polynomial_evaluation.py

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@cclauss thanks for the suggestion!
will do the changes.


return sum(c*(x**i) for i, c in enumerate(poly))


if __name__ == "__main__":
"""
Example: poly = (0.0, 0.0, 5.0, 9.3, 7.0) # f(x) = 7.0x^4 + 9.3x^3 + 5.0x^2
x = -13
print (evaluate_poly(poly, x)) # f(-13) = 7.0(-13)^4 + 9.3(-13)^3 + 5.0(-13)^2 = 180339.9
"""
poly = (0.0, 0.0, 5.0, 9.3, 7.0)
x = 10
print(evaluate_poly(poly, x))