0 0 votes True/False Question : If $A$ is a $2\times2$ complex matrix that is invertible and diagonalizable, and such that $A$ and $A^{2}$ have the same characteristic polynomial, then $A$ is the $2\times2$ identity matrix. Linear Algebra tifrmaths2019 true-false matrix linear-algebra eigen-value + – soujanyareddy13 346 views answer comment Share Follow Print 0 reply Please log in or register to add a comment.