1. Using SPSS MATR IX or SAS IML, find the inverse for the following 4 4 symmetric matrix:

2. Run the following SPSS MATR IX program and show that the output yields the matrix, determinant, and inverse.

MATRIX.

COMPUTE A={6, 2, 4; 2, 3, 1; 4, 1, 5}.

COMPUTE DETA=DET(A).

COMPUTE AINV=INV(A).

PRINT A.

PRINT DETA.

PRINT AINV.

END MATRIX.