Use the answer to Exercise 25 and one of the gausselim, gaussjord, or rref commands of Map...

Use the answer to Exercise 25 and one of the gausselim, gaussjord, or rref commands of Maple or corresponding commands in another appropriate software package to determine if the vectors

span .

Exercise 25

Suppose that v1, v2, ..., vk are vectors in . How can we tell from a row-echelon form of the matrix

if v1, v2,..., vk span