Roots of a cubic polynomial: Difference between revisions
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Find all eigenvalues of a real 3x3 matrix and estimate their errors. |
Find all eigenvalues of a real 3x3 matrix and estimate their errors. |
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See Wikipedia Cubic equation. |
See Wikipedia Cubic equation. [https://en.wikipedia.org/wiki/Cubic_equation] |
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Example. |
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a*x**3 + b*x**2 + c*x + d = 0 |
a*x**3 + b*x**2 + c*x + d = 0 |
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Revision as of 13:40, 23 November 2023
Roots of a cubic polynomial is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.
Find all eigenvalues of a real 3x3 matrix and estimate their errors.
See Wikipedia Cubic equation. [1] Example.
a*x**3 + b*x**2 + c*x + d = 0
matrix: [[1,-10], [0,1,-1],[0,0,1]]
polynomial: [a,b,c,d] =[1, -3,+3, -1]
roots: [1,1,1]