Question

What is the value of D?
$A∈ℝ^{n \times 2} , B=A^{T} A,\\BC=A ^{T} , D=CA$
(a) Iₙ
(b) I₂
(c) A
(d) A^{T}​

Answer 1

Answer:

I think (d) A^{T}

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