Let {₁,..., un} be an orthonormal set in R" and let U = [u₁ U₂ of the following is/are true? (Select all that apply) OUT is an orthogonal matrix. {U₁, ..., Un} is linearly independent. OU is an orthogonal matrix. det U = 1 or -1 OU-¹ is an orthogonal matrix. un] be an n x n matrix. Which

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