answer48 - 4801 a , b , c xo * A n/X* A , l= a , b , c >...

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Unformatted text preview: 4801 a , b , c xo * A n/X* A , l= a , b , c > 0, l , m , n N, b+c a+a = 2b a a a=b=c m= l+m+n=6 c + a c + (b + c ) b + 2c b + 2b = = =3 b b b b l+m+n= b+c c+a a+b + + * a b c abc b + c = l a, c + a = m b, a +b = n c l,m,n l+m+ (1) l =I 2*6 `5 } * (2) l = 1, b + c = a b+c =a m = 3 a = 2c , b = c l + m + n = 1 + 3 + 3 = 7 c + a = 3b b+c = a m = 2 a = 3c , b = 2c l + m + n = 1 + 2 + 5 = 8 c + a = 2b b+c =a m = 1 a = b , c = 0 , c+a =b , l + m + no * xA 6,7,8 , E y yE36*jF+N@ * 6 3 36*5jF+N , > * B yE B 4802 : 1,2,3,...100. * 7 E y * ` .x ) * , , 7 3 * 7 ? , , 100 , , ` * 8 7 ( , (, 1 2 18,90 2 , 3 (1,5) 50 21 , 52 (1) h ) 2 , 7 (1) 1 2 h , ,, ` ) , p : ` ) h h * 7 , * 7, 100 7 * , 7 * 72 * , 7 , 3, , 2 1 1 13 1 2 1 4 1 1 27 , h * 7 ,( 98 22 (1,3, 5,..., 25) 4,12,20,28,36,44,52,60,68,76,84,92,100 72 23 , 32 (1) 25 (1,3) 31 , 52 (1) 3 (1, 5, 7,11) 52 (1) 7 2 (1) , , > @ E@ @ 47 @} { A 7 ( 20 , * 6 + F N6j 3 * 6 3 > , E E E y y `y+ { p F m > 2 32,96 75 9,45,63,99 25 49 , ` % ` , ` % ` * ( 6 5 * ` I , } ,, ,, ! 4803 ABC AB7 7 x 3 AD BC D A 45 BD 3 CD 2 ABC AFC EB FC 7 ( ADB AEB AC7 G , AEGF7 BCG 2 7 ( ADC 5 6 2 x 2 2 52 x 6 ABC 15 1 A A E B D C B B D F C G (7 * 7D @{E> D @{E7> * yE *7 25 (7 * 15 (7 60(7 * AB, AC yE 4804 {a n } b 1,2,3,4,2,3,4,5,3,4,5,6, , a 2006 (8 * an b S n {n} = 1,2,3,4, , n, n - 1 * 3 = {0,0,0,0,3,3,3,3,6,6,6,6,} 8, 4 {a n } 95 , S 95 &*yE 8, b b 8, * b n - 1 a n = n - 3 4 2006 = 503 b a 2006 = 2006 - 3 4 b S 95 b S 95 = 1 95 96 - 4(3 + 6 + 9 + + 66) - 3 67 = 3600 2 nb Sn b b Sn = a1 + a2 + + an n n - 1 = (k - 3 ) 4 k =1 n n(n + 1) n - 1 = - 3 2 k =1 4 n n 4 ( 4 - 1) n(n + 1) n n = - 3( 4 + (n - 4) ) 2 2 4 4 = b E y@E36*4jF+N I }*`56( n(n + 1) n n + 6 - 3(n - 2) 2 4 4 b 2 4805 4 ~7* ABC b 7 H~* M b AB ~ 7 MH ~ 7 b HD CDb b b O b COEb b AEb BEb AHb BHb b CAEb 90o, b , EA ACb b Hb b BH ACb b EA//BHb b EB//AHb BHAE p AB b EH ~ 7 M b AB b D b MH ~* 7 Eb Mb Hb D b HD CDb Ob O b Db M A H B O C D A E M 7 ~ b 7 ~ b b b b (>mF+p{Ey` M H B O C C D ...
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This note was uploaded on 03/25/2011 for the course MATH 1232 taught by Professor Dr.jiangzhengchien during the Spring '11 term at Nanjing University.

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