?? ????????????????
????:1?????????:???????
2??????vx
3???????
4???????????
5???????????
??2???????8??? (???????? ?)???????????????8????????????????????,??????????,?????????????????
2??????8?????????,??????????,??????????,??????????????????????,???????????,?????????????????,???????????,?,????????????????,??????????????
???????????,?????????????,??????????100?????????????????????,??46?????????,?,??????(?????????????????????)
???:?????