Chapter 1, Problem 1.28P

To determine

(a)

To state:

WhetherA=B, and to discuss the conditionsimposed on A and B when $\text{A}{\text{.a}}_{\text{x}}\text{=B}{\text{.a}}_{\text{x}}$ if its not.

To determine

(b)

To state whether A=B and to discuss about the conditions imposed on A and B if

   $\text{A}\times {\text{a}}_{\text{x}}\text{=B}\times {\text{a}}_{\text{x}}$ .