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Q31Section B (Part B)31 of 120

Inner product spaces — which property of a weighted inner product fails

Let BB be a 4×44\times4 positive-definite real symmetric matrix which is not the identity matrix. Consider the inner product on R4\mathbb{R}^4 given by ⟨v,w⟩=v⊤Bw\langle v,w\rangle=v^{\top}Bw, where v⊤v^{\top} denotes the transpose of vv. Which of the following statements is FALSE?

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