If the vector x is in both and then and . What can you deduce from that?
That certainly helps a lot, but I suspect something is missing. Am I just to show that the two do not equal unless the zero vector is used, or is there something else I'd need to show?
That certainly helps a lot, but I suspect something is missing. Am I just to show that the two do not equal unless the zero vector is used, or is there something else I'd need to show?
If then , and if then is a nonzero real number, so you can divide by it. That's all that is needed.