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Machine Learning Foundations, Quiz 2

January 2026 term, 12 Apr 2026, Set 1

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Question 1

+4−0Single correct

Consider a vector such that . Let , where is the identity matrix. Which of the following is true?

Select one option

A.
is Hermitian and unitary.
B.
is Hermitian but not unitary.
C.
is unitary but not Hermitian.
D.
is neither Hermitian nor unitary.

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Consider a vector such that . Let , where is the identity matrix. Which of the following is true? If is a matrix with eigenvalues and , what is det ? Note: det denotes the determinant. Let be a Hermitian matrix. Which of the following options is correct for the values of and ? Let