44:25 "orthogonal matrices haibadilishi urefu wa x" nadhani alimaanisha orthonormal. [Gilbert Strang hutumia orthogonal na orthonormal kwa kubadilishana]####[['orthonormal', 'Mathematical_Related_Concept', 'NEU'], ['Gilbert Strang', 'Instructor', 'NEU'], ['orthogonal', 'Mathematical_Related_Concept', 'NEU']]