How To find the eigenvalues of any matrices in just 2 minutes?

Find the number of matrices having 12 elements

Using elementary transformtions (operations), find the inverse of the following matrices, if it exists: [[1/2,2/5],[2/5,- 1/5]]

Using elementary transformations (operations), find the inverse of the following matrices, if it exists [(2,-1,3),(-5,3,1),(-3,2,3)]

Show that if lambda_(1), lambda_(2), ...., lamnda_(n) are n eigenvalues of a square matrix a of order n, then the eigenvalues of the matric A^(2) are lambda_(1)^(2), lambda_(2)^(2),..., lambda_(n)^(2) .

Using elementary transformations, find the inverse of the matrices [[2, 5],[ 1, 3]]

Find the ratio : 5 minutes to 50 minutes

Using elementary transformations, find the inverse of each of the matrices [[3 ,10],[ 2, 7]]

Find the inverse of the following matrices, if it exists, using elementary operation: [[2,5],[1,3]]

The minute hand of a clock is 14 cm long. How far does the tip of the minute hand move in 60 minute? (a)22 cm (b) 44 cm (c)33 cm (d) 88 cm

For any two matrices A and B , we have