I was given this question, and I'm getting stuck. It's a pretty basic question, I think.
My understanding is a pivot is the first number in that row. So, if it has a pivot in each column, then the matrix looks like an upside down staircase. I don't know what must be true for the system to have a unique solution.
Can you help?
My understanding is a pivot is the first number in that row. So, if it has a pivot in each column, then the matrix looks like an upside down staircase. I don't know what must be true for the system to have a unique solution.
Can you help?