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A=
3 4 6 1
-1 0 6 5
8 1 0 4
-1 -2 1 3
How can I transform A to reduced row echelon form with using elementary row operations. I cannot solve because I can’t use the rref() command.
If your question is about the use of Matlab, the answer is, of course, elementary. For example, you can switch rows this way:
you can multiply a row by a constant this way
and I’ll leave you to figure out how to add rows together.
If your question is about the mathematics of reducing
Ato row echelon form, that would be off-topic on SO.