The statement is true in general for invertible.
In fact, if is a solution of then
This implies that is a solution for
It's easy to prove the reciproque.
Regards
---
Fernando Revilla
i dont really understand this statement. can someone explain to me?
what does it mean:
Ax=b has solutions iff APy=b has solutions.
in my notes, it states that that means that column operations dont change the span of the columns...but i still dont get what that means
The statement is true in general for invertible.
In fact, if is a solution of then
This implies that is a solution for
It's easy to prove the reciproque.
Regards
---
Fernando Revilla