0 votes 0 votes Consider a non-singular $2 \times 2$ square matrix $\textbf{A}$. If $\text{trace}(\textbf{A})=4$ and $\text{trace}(\textbf{A}^2)=5$, the determinant of the matrix $\textbf{A}$ is _________ (up to $1$ decimal place). Linear Algebra gate2018-ee numerical-answers linear-algebra matrices determinant + – Arjun asked Feb 19, 2018 • retagged Mar 10, 2021 by Lakshman Bhaiya Arjun 15.9k points answer comment Share See all 0 reply Please log in or register to add a comment.