Below, five systems of linear equations have been put in reduced row echelon for
ID: 3112590 • Letter: B
Question
Below, five systems of linear equations have been put in reduced row echelon form. Identify how many solutions each one has, and enter that number in the blank. Enter the word 'infinite' (without the quote marks) if there are infinitely many solutions. (a) [1 0 0 4 0 0 1 0 0 0 1 0 0 -1 0 0 -5 0] (b) [1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 -2 1 -2 2 1 0] (c) [1 0 0 -4 0 0 0 1 0 5 2 0 -1 0 1] (d) [1 0 0 0 0 1 0 0 0 0 1 0 0 1 4 0 5 3 -3 0 -5 -3 -5 0 -1 -1 4 0] (d) [1 0 0 0 0 0 2 0 0 0 0 0 0 1 0 0 0 0 3 -1 0 0 0 0]Explanation / Answer
infinite
unique (1)
no solution (0)
infinite
infinite