![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Multiplication of two matrices possible if the number of columns in the
\first matrix equals the number of rows in the second matrix.
\Let A be the first matrix and B be the second matrix.
\The dimensions of the matrix A are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2494a39597fe0b6d4625d37d2745eb3e.png\")
and the number of columns in
the matrix A is 2.
\The dimensions of the matrix B are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5aa20f28bbcca12b854cf1d5b605ed47.png\")
and the number of the rows in the matrix B is 1.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
The number of columns in the matrix A is not equals the number
\of rows in the matrix B.
\So, matrix product AB is impossible.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The matrix product AB is impossible.