. . „ 2 T 3\rC. ------^= y ???$3 D. ------ ^=B«'ÛÜ$xß y\r5 5 5 5-\r2 .àx ?J'\rá+ØFG%&'â?qr`0 , (\nØtu?$¤ §\rÇ@,1?ä`0 !3.@,13^ä`0 C.a,bä¼ D. a, b äæ`¼ç\r3 . 3*2",?ß`5é2 > " , ( ê = , ë\r4 .2009V+7_ 1 _ é2,“+ 3 $%&'( ¤2îï?;`\r2009\r5IST a-b=2004, b-c=-2005, c-d=2007,: ¤" " ¤ð\§\ra - d\r6IST3ñ T y 4 o.7y2ó4 5 = ô4- 4 , : a,¿n ?;\r7 I :\r3a 8 1 5 / + 5 / 6Ç+ 15a22 / ? ; < = a, b õ ö ÷ ø\ra + l| + (2b-ù = 0.\r8ISTàx ?\ÂJ'\r4¤I Æ + 3û +ü 2ý + x§ + Jr 5 , P x=2\nT7,\r?Px=-2?\n\r94 = 2%2+3 - 2*-1, B = -x2 +x^-l, #3A+ 6 8\n'x()? y\n