Rotation of ellipsoid using matrix

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Mirzobek Malikov
Mirzobek Malikov il 6 Set 2022
Risposto: Matt J il 6 Set 2022
I have ellipse matrix A^-1 and vector b by solving cvx problem. A^-1 eigenvalues are major and minor axis. But still can’t find the rotation angle of ellipsoid. If you can help it would be nice!
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James Tursa
James Tursa il 6 Set 2022
Do you have the eigenvectors? Can't you get the desired angle from those?
Mirzobek Malikov
Mirzobek Malikov il 6 Set 2022
i have eigenvectors. but i don’t know how to get desired angle

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Matt J
Matt J il 6 Set 2022
You just compute the angle between one of the eigenvectors with the x or y axis.

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