The matrix is .
Observe the matrix; it has 4 rows and 1 columns.
A matrix with m rows and n columns is a matrix
Since matrix has 4 rows and 1 columns, the dimensions of matrix are
The dimensions of matrix are .
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.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
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matrix![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c50cbd0369f20766cc532af224e6b571.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.