A linear system of equations has n unknowns. The ranks of the coefficient matrix and the augmented matrix of the linear system of equations are r1 and r2, respe...

If one of the two Eigenvalues of a matrix [3 2; 2 1] is 4.236, then the other Eigenvalue (round off to 3 decimal places) is _______.

Trace of the matrix is ___________.[in integer]