Matrices and linear systems
Lesson 1 of 10
Introduction
Gaussian elimination
Objective. Solve a linear system by reducing the augmented matrix to row echelon form.
- 1. Learn
- 2. Worked example
- 3. Practice
- 4. Feedback
- 5. Continue
Learn: the key idea
Row operations do not change the solution set, so reduce to a triangular form and back-substitute.
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