Use forward elimination to make the coefficient matrix, A, an upper triangular matrix, and then solve using back substitution, for a sample 2-by-2 system.
Back to basics 23 - Triangular matrix
The sum of the numbers in the vector
03 - Matrix Variables 6
04 - Scalar Equations 3
Partial pivoting for Gauss Elimination
Fletcher-Reeves Conjugate Gradient Method
Rosenbrock's Banana Function and its derivatives
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