Roots of a quadratic function: Difference between revisions
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'''Solution''' use J's built-in polynomial solver:
p.
This primitive converts between the coefficient form of a polynomial (with the exponents being the array indices of the coefficients) and the multiplier-and-roots for of a polynomial (with two boxes, the first containing the multiplier and the second containing the roots).
'''Example''' using inputs from other solutions and the unstable example from the task description:
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