marwag271997 marwag271997
  • 18-05-2023
  • Mathematics
contestada

Let A, B ∈ R
n×n be two symmetric
and positive definite matrices with AB = BA and
(Ax, x) ≥ (Bx, x) ∀ x
,
then norm of Ax is greater than norm of Bx for all x ∈ R

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