Linear Algebra and Its Applications · Problem 1.3.20

Matrices and Gaussian Elimination — Gilbert Strang

Mathematics · gaussian-elimination

Problem

Find the pivots and the solution for these four equations:

\begin{aligned} 2x + y &= 0 \\ x + 2y + z &= 0 \\ y + 2z + t &= 0 \\ z + 2t &= 5. \end{aligned}