Let A= . -1 1 -1 3
3 1 -1 -1
2 -1 -2 1
a) Find a matrix B that is row equivalent to A.
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///