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Determinantsmedium
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If the columns of a 3×33 \times 33×3 matrix AAA are u⃗,v⃗,w⃗\vec{u}, \vec{v}, \vec{w}u,v,w, what is det⁡(A)\det(A)det(A) if w⃗=u⃗+2v⃗\vec{w} = \vec{u} + 2\vec{v}w=u+2v?