This “validator” is actually a set of subfunctions to be used in validators. This reduces a numeric matrix into reduced row echelon form.

This “validator” is actually a collection of subfunctions that compute the reduced row echelon form for a numeric matrix.

Specifically, a matrix should be entered into the answer box in the following format:

.

So, if a student wishes to enter the matrix:

They would enter into the answer prompt: .

Put in a matrix using the format: , and it should be converted into reduced row echelon form below. Hopefully.