Question

In the matrix A = `[("a", 1, x),(2, sqrt(3), x^2 - y),(0, 5, (-2)/5)]`, write: elements a₂₃, a₃₁, a₁₂ 

Answer 1

We have, A = `[("a", 1, x),(2, sqrt(3), x^2 - y),(0, 5, (-2)/5)]`

Since, a_ij is the element lying in the i^th row  an j^th column

We have a₂₃ = x² – y, a₃₁ = 0, a₁₂ = 1.