????:1????????????:??????

2?????????

3????????????

4?????vx

5?????

???????6?????????????11???????? (??? ???)??????????27????????????????,??,???????????????

?????6??11????????????,?7????????????????1?????????,???????????,??????????????????????;??????

?,??,????????????????M+?????????????????????(?)

??????????M+??????? ??????? ??????????? ??7???1?????????????????????? ?? ?????????????? ??:???