Question

Find the adjoint of the following:

`[(-3, 4),(6,2)]`

Answer 1

Let A = `[(-3, 4),(6,2)] = [("a"_11, "a"_12),("a"_21, "a"_23)]`

∵ Interchhanging a₂₂ and a₁₁

sign changing a₁₂ and a₂₁ 

adj A = `[(2, -4),(-6, -3)]`