Find the steps to compute Smith's canonical form of the belowmatrix and its invariant divisors, the solution is at thebottom.

Example 4 Find the Smith canonical form of a- a -1 2 - a -1 A(a) = a - a Question -1 λ 2-a a and its invariant divisors. Find steps to get this result: 1 Anwer 1 (a – a)4