1,047
edits
Changes
no edit summary
Let $A$ be the matrix
\startformula
A := \startpmatrix
\NC 2 \NC 3 \NR
\NC 1 \NC 2 \NR
\stoppmatrix.
\stopformula
\NC 2 \NC 3 \NR
\NC 1 \NC 2 \NR
\stopdeterminant = 1.
\stopformula
Compute the matrix $AB$ where $B$ is the matrix
\startformula
B := \pmatrix{2, -3 ; -1, 2}.
\stopformula