Question

Math Question.
Determine which of the following matrices are in reduced row-echelon form. Let me draw the matrices.

Answer 1

I think matrix B has a little problem. The second row 3rd column is a *2* which should be reduced to “ones”... @mhchen what do you think? :)

Answer 2

What math is this?

Answer 3

C also has a problem

Answer 4

Just A

Answer 5

What math is this
?

Answer 6

So apparently the answer is *NO, since in the second column, the leading 1 is not the only none-zero entry*.

Answer 7

Linear algebra

Answer 8

when do you take this?

Answer 9

Can you please Dm me all your inquiry questions?

Answer 10

nvr mind. I am only a freshman (high-school) in pre-calc

Answer 11

ok

Answer 12

Rref is unique and calculators online (and in your ti84) exist just so you know

Answer 13

A also has a problem. The second column can be free but the leading entry in the fourth column shouldn’t be 1. There should be a triangle of zeros above and below the staircase in order that matrix A to be in RREF

Answer 14

O

Answer 15

Ya I'm braindead