For a 2×22 \times 22×2 matrix AAA, what is det(kA)\det(kA)det(kA)?
kdet(A)k \det(A)kdet(A)
k2det(A)k^2 \det(A)k2det(A)
2kdet(A)2k \det(A)2kdet(A)
det(A)\det(A)det(A)