Enjoy the flight....
.... And, learn something new...
MATRIX CALCULATOR find determinants, inverses, and transpose matrices at solvemymath.com
Examples of Cramer's rule by purplemath.com
Here are notes and examples of determinants and matrices from Paul's Online Math Notes
LESSONS, examples, and matrix applications; matrices, determinants, Cramer's rule, Inverses, Gauss-Jordan elimination from intmath.com
DEFINITIONS and formulas: determinants, inverses, cofactors, matrices, transpose, adjoint, invertible, noninvertible matrix at mathwords.com
Vectors, matrix, systems online calculators from mathportal.org
"Secret Identity Matrix" by Chris Burke (X, Why? -- #505) 8-18-10
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Matrix, Reduced Row Echelon Form, and other functions of the TI nspire graphing calculator