If `A = ((1,2),(2,-1))` then find `A^- 1`, 1 if it exists, by using elementary transformations.

If A = ((3,1),(5,2)) then find A^- 1 , 1 if it exists, by using elementary transformations.

If A = ((4,5),(3,4)) then find A^- 1 , 1 if it exists, by using elementary transformations.

Find the inverse of the following, if it exists, by using elementary row (column) transformations: {:[(2,1),(7,4)]

Find the inverse of the following, if it exists, by using elementary row (column) transformations: {:[(2,5),(1,3)]

Find the inverse of the following, if it exists, by using elementary row (column) transformations: {:[(2,3),(5,7)]

If matrix A = [[1,2,3],[2,5,7],[-2,-4,-5]] , Then find A^-1 using elementary transformations (row or column).

If matrix 'A = [[2,-1,4], [4,0,2], [3,-2,7]] , Then find A^-1 using elementary transformations (row or column).

If matrix A = [[3,0,-1],[2,3,0],[0,4,1] , Then find A^-1 using elementary transformations (row or column).

Find the inverse of the following, if it exists, using elementary row (column) transformations: {:[(-1,1,2),(1,2,3),(3,1,1)]

Find the inverse of the following, if it exists, using elementary row (column) transformations: {:[(1,2,-2,),(-1, 3, 0),(0,-2,1)]