2. Use the "rref(A)" command in MATHLAB, for the given matrix A below, use as many column vectors of A as possible to construct a new matrix B, such that the column vectors of B are linearly independent. Use the definition of Linear independence to set up a system of equations and solve the system to verify your choice is correct. Print a screen shot of your work and explain how you used the matrices. 3 -4 10 7 4 1 8 7 23 4 15