Question

what is the latex code for an n x n matrix?

Answer 1

hi look to this If it helps @ParthKohli http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/Matrices.html

Answer 2

this site is pretty long...where should i look?

Answer 3

ya so I suggest from para 1 to para 5

Answer 4

\chi(\lambda)$ of the $3 \times 3$~matrix \[ \left( \begin{array}{ccc} a & b & c \\ d & e & f \\ g & h & i \end{array} \right)\] is given by the formula \[ \chi(\lambda) = \left| \begin{array}{ccc} \lambda - a & -b & -c \\ -d & \lambda - e & -f \\ -g & -h & \lambda - i \end{array} \right|.\] \]

Answer 5

\[\left[ \begin{array}{ccc} a & b & c \\ d & e & f \\ g & h & i \end{array} \right]\]
ahh i get it thanks