Finding the elementary matrix using TI Nspire cx cas calculator

Jan 2016
2
0
Australia
(from the matrix equation Ax=b,) I know that EA=R, where E is the elemenatry matrix that reduce A to its Row Reduce Echelon Form R.
The Nspire cx cas calculator has a rref(A) command to find R from A, my question is :
Can I find E using some simple command from the calculator (assume A is rectangular) ?
Thanks.