Question: Explain the solution as detailed and easy as possible. 2. Let D be an x d matrix. Use the definition to prove that the d

Explain the solution as detailed and easy as possible.2. Let D be an x d matrix. Use the definition to


2. Let D be an x d matrix. Use the definition to prove that the d x d matrix DTD is (1) symmetric and (2) positive semidefinite.

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