Q5-1¶
Given the equations¶
$10x_1 +2x_2 -x_3 = 27 $
$-3x_1 – 6x_2 + 2x_3 = -61.5$
$x_1 +x_2 +5x_3 = -21.5$
- Solve by naïve Gauss elimination. Show all steps of the computation.(手寫)
- Substitute your results into the original equations to check your answers.
