Pivot the matrix about the element 4
1 3 5
5 4 2
To pivot the matrix about the element 4, we need to perform row operations to make the element 4 the pivot element.
Here are the steps to pivot the matrix about the element 4:
Step 1: Identify the row and column containing the element 4. In this case, it is the second row and second column.
Step 2: Perform row operations to make the element 4 the pivot element. To do this, we need to interchange the second row with the first row.
Here is the new matrix after swapping the first and second rows:
5 4 2
1 3 5
Now, the element 4 is the pivot element.
Please note that you can pivot a matrix about any desired element by using row operations to place the desired element in the pivot position.