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companion-roots
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Finds all roots of a polynomial by computing the eigenvalues of its companion matrix. In other words, it factorizes the polynomial over the complex numbers.
Install using npm:
npm install companion-roots
var findRoots = require("companion-roots")
var roots = findRoots([1, 1, -1]) // Finds roots for 1 + 1*x - 1*x^2
// Now:
// roots[0] = real part of roots
// roots[1] = imaginary part of roots
for(var i=0; i<roots.length; ++i) {
console.log(roots[0][i] + "+" + roots[1][i] + "i")
}
// Prints:
// 1.618033988749895+0i
// -0.6180339887498949+0i
require("companion-roots")(real_coeffs[, imag_coeffs])
Computes the roots of a polynomial
real_coeffs
the real coefficients of the polynomial arranged in order of increasing degreeimag_coeffs
(optional) the imaginary coefficients of the polynomial. If not specified, assumed to be zeroReturns: A pair of vectors representing the real and imaginary parts of the roots of the polynomial
Time Complexity: O(real_coeffs.length^3)
(c) 2013 Mikola Lysenko. MIT License
FAQs
Finds roots of polynomials by solving the eigenvalues of the companion matrix
The npm package companion-roots receives a total of 13 weekly downloads. As such, companion-roots popularity was classified as not popular.
We found that companion-roots demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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