題組內容

1. Solve the following system of equations using

\( x_1 + 3x_2 + x_3 = -2 \)
\( x_1 + 3x_2 + x_3 = -2 \)
\( x_1 + 3x_2 + x_3 = -2 \)

 

 (a)Cramer’s Rule (10%)