![\"\"](\"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.
\\
The dimensions of the matrix X are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ac5d6352dcd1112f6c2ecf2f4d791531.png\")
and the number of columns in
the matrix X is 3.
\The dimensions of the matrix Y are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=77eda1f4c151406f7beb6f168a286609.png\")
and the number of the rows in the matrix Y is 2.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
The number of columns in the matrix X is not equals the number
\of rows in the matrix Y.
\So, matrix product XY is impossible.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The matrix product XY is impossible.