Suppose u and v satisfy u = 3, uv = 4, and u − v=6. What must v equal? Does your answer depend on which norm is being used?

a) v= −1; Depends on the norm used.
b) v= −3; Depends on the norm used.
c) v= −2; Does not depend on the norm used.
d) v= −4; Does not depend on the norm used.