The matrix is .
The matrix has 1 row and 4 columns .
There fore, it is a matrix.
The circle element is in the first row and the third column.
The matrix is matrix and the circle element is in the first row and the third column.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=68545865b9fc6e24a5691a12f59a4d13.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0232d843c8f628ad8ecbca0caf3cdcdc.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dac988509deecef220118ed7c82b5374.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=dac988509deecef220118ed7c82b5374.png\")
matrix and the circle element is in the first row and the third column.