LetA= . -1 1 -1 3

3 1 -1 -1

2 -1 -2 1

a)Find a matrixBthat is row equivalent toA.

b)Determine whether the fourth column vector forms a linear combination with the first three column vectors.

c)Show that the first three column vectors are linearly independent. Explain.

i need help to practice this i have test day after tommorow..i need hard pracrice///