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1、(a)(b)b1Sbb1Sb22TUTUb1b2b1WWb1bb2b1b1b21b2XXb2b1b1YZYZSSb2b3b1b2TUTUb3b1b2WWb2b3b3b1bb21§b2b3Xb1§b2Xb1§b2YZYZ(c)(d)b1b2b1b2SUS?SUS?b1b2b1§b2b2b1b1§b2b1§b2TVT?TVT?Timeunit1:b1UVSTS?T?Timeunit2:b2UVSTS?T?Timeunit3:b1§b2UVSTS?T?STUWXYZfOS=??1·?fOS?=??0·??????01?11?10·SKS=?????011KT=(11)
2、?1·?0·KU=(11)?????????01?11TU?1·KW=?????11?1·?0·????W?????01?11?1·?0·?????1·?????01?????11?11?1·?1·?????????11X?11YKX=(11)ZfOS=??1·?fOS?=??0·??????01?11?nq·SKS=??pr???1KT=(st)KU=(uv)?n·?q·????????T?p1?r1U?w·KW=?????x1?ns·?qu·????W?????ps1?ru1?nt·?qv·??pt???nsw+qux·?????1?????rv1??nsw
3、y+quxy·??psw+rux1???pswy+ruxy1XYKX=(yz)?nswz+quxz·Z?????pswz+ruxz1(a)(b)?1·?0·?1·??1·?????S????????S?0??01?11?01?1?0·?0·T??0??UT??1??U?1?1?1·?0·?1·??1·?????W??1????0??W?0??01?1?1?1?0·?1·?1·??1·?S??????S??0???0???0?1?01?1?1?0·??0·?T??1??UT??1?1U?1?0·?1·?0·??????0·?????W?????01W?0??01?
4、01?1(c)(d)?1·?0·?????????01?11S?1·?1·?????????11?1·?11?????01XYs?y1·?y4·?????????z11?z41?y2·?y3·?????????z21?z31UU2U13U4T1T2T3T4T5T6?1·?0·?????????01?11S?1·?0·?????????01?11?0·?1·?????????11?01XY?1·?0·?????????01?11?101·SKS=?????0111cde?13·g??KX=?32?XY??11?1h?1·?0·??????1???01?1?10·S
5、KS=?????011?1·?0·??0???????1?1·?11KU=??1???1?1·?1·KT=????TUT’KT’=??0???011?0·?1?·??????1???01?1?1·?????11?1·?1·??1???????1?11VKV=(11)?1·?0·??????1??ab?01?1?10·SKS=????S?011?1·?0·ab?????????01?11?1·fXY=????+fWXp=a+r?1·?01?1·KX=????XYKY=????XY?11?11?0·r=qq=b+pfWX=fYWfWZ=????+fXY?11WWKW
6、=(1)(a)(b)t=0t=1t=2t=3t=4t=5XXXXX4X5X60123aa3a0+a0a0a12a+ba+b400aa120310a0aa2a3a4a51b0bb2b3b4b51SS4S5S6S0S1S230b0b1b2b3b4YYY2YY4Y5Y6013000b0a0+b1a1+b200b0a0+b1a1+b2a2+b0+b3W0W1WW3W4W5W6?1·?0·?????????01?11?10·SKS=?????011?z·???0·?0??????1z23?1?z/(1-z)·???43??1·?z/(1-z)1?1·KX=??1??XYK
7、Y=?????1?1143?z3/(1-z3)·?z/(1-z)·?????z3/(1-z3)??z2/(1-z3)??1?1WKW=(1)?1·?0·?????????01?11?10·?z·SKS=???????011???01?0·?????z1?2·z??3?z4??1-z·?1?1-z3·KX(z)=????XYKY(z)=???11??1?14?z3·?z·?????z3??z2??1W?1KW(z)=(1)t=0t=1t=2t=3t=4t=5XXXXXXX0a0a1a2a3a400a0a1a2+b0a3+b1SSSSSSS0b0b1b2b3b4YY
8、YYYYY000b0a0
