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any system in echelon form can be rewritten in row reduced echelon form

|dw:1439931493101:dw|

so u cannot have inconsistency

that has 3 variables x ,y ,z we dont know the constants

|dw:1439931839159:dw|

|dw:1439931879525:dw|

this is not echelon form there is simply no echelon form for this

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actually wait i dont know, what does inconsistent mean again?

there is actually an example there where RREF has all 0s in the bottom soo

Yeah, that's what's confusing me.

i was thining inconsistent is same as dependant but thats not it

gotta have it as 1 i guess

what is the definition of inconsistent, that should clear this up

Ohh okay

That is just NOTATION.

That shows you how "an echelon form can be inconsistent"

It's above my head!! :)

Exactly! the "given" set of equations are in "staircase" looking form

heard of "back substitution" before ?