Q4 3.4

Find a basis of the subspace of * defined by the equation -9x1 + 9x2 - 2x3 + 4x4 = 0. Answer: To enter a basis into WeBWork, place the entries of each vector inside of brackets, and enter a list of these vectors, separated by commas. For instance, if your basis is then you would enter [1,2,3],[1,1,1] into the answer blank