6. For each of the following, a subset W of a vector space V is given….

6. For each of the following, a subset W of a vector space V is given. Carefully prove or justify your answers. Use counterexamples where appropriate. a1 (b) (7 points) Show that w = | | a2 is a subspace of V-R4 under the usual operations. a4-аз-аг-ai a4