Let u1=[1 1 -2] u2=[5 -1 2] u3=[0 0 1] Note that u1 and u2 are orthogonal but that u3 is not orthogonal to u1 and u2 it can be shown that u3 is not the subspace W spanned by u1 and u2.Use this factor to construct the nonzero factor v in R3 that is orthogonal to u1 and u2.