1. METHODS OF COUNTERFOILS: DECOMPOSITION LU WITH PARTIAL PIVOTEO REALIZED FOR: FREDY ANDRES REYES SANCHEZ

2. DECOMPOSITION LU WITH PARTIAL PIVOTEO Solve the following system of equations using the decomposition LU with pivoted partially: 2

3. Taking the counterfoil increased of the equations: Where the pivoted consists of taking the factors of the first column of the bigger one than the minor. We continue to the elimination ahead: 3

4. And we come to the triangular top counterfoil U: With the factors that I obtained the triangular top counterfoil, I form the triangular counterfoil L, like that: 4

5. Now L I operate on it with regard to the definition: With the substitution ahead: 5

6. And replacing: This way: This result can be replaced in the equation: 6

7. With the substitution backward, we find the result of the mysteries: 7

8. BIBLIOGRAPHY Solved of the Chapra, chapter 10, section of problems 10.2 8