Grupa C2

Barlan
Grigoras
Sturzu
Pauna
Ionica

Ecuatii matriceale

(1)
\begin{align} \begin{Bmatrix} x+2y-2z=-2\\ 5x+9y+4z=-3\\ 3x+4y-5z=-3\\ \end{matrix} \end{align}
(2)
\begin{align} detA= \begin{vmatrix}\ 1& 2& -2\\ 5& 9& 4\\ 3&4& -5\\ \end{vmatrix} =-45-40-24+54+16+50=-119+130=11\neq0,\quad \end{align}
(3)
\begin{align} \begin{Bmatrix} x_1-2x_2+4x_3+3x_4=4\\ 3x_1-5x_2+8x_3+5x_4=0\\ -x_3+4x_4=2\\ \end{matrix} \end{align}
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License