Given matrix is .
The matrix has 4 row and 1 columns .
There fore, it is a matrix.
The circle element is in the fourth row and the first column.
The matrix is matrix and the circle element is in the fourth row and the first column.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4c9a68fa1ccceb720d1f650f145df69c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dfba049dad7b8be58dbd3c9e4dd5ef4f.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c50cbd0369f20766cc532af224e6b571.png\")
matrix. ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c50cbd0369f20766cc532af224e6b571.png\")
matrix and the circle element is in the fourth row and the first column.