4 - t, OQ = 2t,\rA S&0DP =\0P-yD = 1 _4 -rx4 = 8-2r\rSACWQ = : OQxli= ^x2tx2 = 2t\rS&ODP = S/MDQ\r.S -2 t = 2t\r. t = 2.\r- A0\rBCDE`p?§RCZP&¨Z`p?&\n£©/C&KLMª£`p?&\r«¬Vf&STSD®C.\r4Z_1 “° ”u²9 ³²5 “´”u ² 1 ³²5 _2² 7 ³²4 \r-/^0\r-b^0\r1@P¢£ &no?µ³¶
&PP&·¸pqijrs\r_2@ P “¹”&noº2Gd»i|¼&no@P¼&noµ³¶
&PPpqij\rrs.\r-./0\r_1`½¾\J&¶
P “°”u²9 ³²5 ¿U, “´”u ² 1 ³²5 ¿!J\r_2² 7 ³²4 .\r- A0\rBCDEFVÁ¸ÂP(¶
no &GdÃÄVÁ¸P(¶
noM/C&KL..\r5Z[ ] / ^ (2) (5,-1), 4\r-/^0\r-b^0\r( 1 ) Hc° $|G?Hp#$IJ·ÆÇca '?\r( 2 ) @PKx Ë(Ì& ~#$*"#$Í8ÎP?ij !&#$HcUV`p?&\r+/?+jÏ&\n.\r-./0\r/1( 1 ) \t
AABC8t+\r(2) 444C(5, 1 ) , ? !Kx Ë(Ì,\r.44 &#$8(5,T),\r&\n8:x(l + l)x4=4.\r- A0\rBCDEG?Hp#$IP?QRMKL.