question56 - H7·ª*¸-MµE B 5601 O xþR ·ª* I11 I2 1 1...

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Unformatted text preview: H7·ª*¸-MµE B 5601 O xþR ·ª* I11 I2 1 1 1 BCD xª* · Rþ r2 d12 − r1d 22 r2 − r1 ABCDO· RO xª* þ 1 ACDO O BCD xª* · Rþ R · Rþ xª* r11 r2 1 A A 1 ACD I I2 2 O I d1 = OI 1 O d2 = OIþ 2 x6 · C I1 1 D R= 5602 F D R · þª * HE O ABCDO BC O EO HF O G HO AC O BD O AD O FO G O AB O AB O A G H C E GE = GF O B 5603 O m· Rþª * 1 mO ? 3x + 5 y − 2 − m + 2 x + 3 y − m = x − 200 + y ⋅ 200 − x − y 5604 ·7 1 µ M ¸ * Hª 40 @·ª JG* D ¤ Y Ð 4×10 xª · 6þ * 20 1 1×2 xª · 6þ * 4×10 1 2×1 1 5605 1 a, b, cD J D ¤ Y Ð * ª · (a − b)(b − c)(c + a ) = −90 (a − b)(b + c)(c − a ) = 42 (a + b)(b − c)(c − a ) = −60 a, b, c 1 1 ...
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This note was uploaded on 12/18/2010 for the course MATH 25234 taught by Professor Dr.maoxiaoxching during the Spring '10 term at Fudan University.

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