SOLVED:Show that if B is m xn; then B"B is positive semidefinite; and if B is n xn and invertible, then BTB is positive definite. First suppose only that B is mxn:
SOLVED:Suppose (u, uT Bv defines an inner product in R" for some n X n matrix B Explain why B must be invertible. marks) Explain why B must be positive definite. marks)
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