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§@ªÌ: Justice    ®É¶¡: 2010-8-19 23:57     ¼ÐÃD: °Ý¼Æ(¤w¸Ñ¨M)



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[ ¥»©«³Ì«á¥Ñ Justice ©ó 2010-8-20 09:26 ½s¿è ]
§@ªÌ: wang    ®É¶¡: 2010-8-20 00:26     ¼ÐÃD: ¦^´_ #1 Justice ªº©«¤l

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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 00:39

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§@ªÌ: satzuna    ®É¶¡: 2010-8-20 00:43



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 00:46



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§@ªÌ: louislee2815    ®É¶¡: 2010-8-20 00:47



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 00:47



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§@ªÌ: louislee2815    ®É¶¡: 2010-8-20 00:48



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 00:53



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§@ªÌ: louislee2815    ®É¶¡: 2010-8-20 00:54



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§@ªÌ: satzuna    ®É¶¡: 2010-8-20 01:22



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 01:34



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§@ªÌ: satzuna    ®É¶¡: 2010-8-20 01:42



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 02:21



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[ ¥»©«³Ì«á¥Ñ ¬P°¨ ©ó 2010-8-20 02:24 ½s¿è ]
§@ªÌ: jamzjam    ®É¶¡: 2010-8-20 02:43

¦]¬°SR//PQ
©Ò¥HThe slope of SR=The slope of PQ         
The slope of PQ=(5-1)/(2-5)   =  -4/3
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©Ò¥HThe slope of PS x -4/3 = -1
                     The slope of PS = 3/4
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[y-(-2)]/x-1= -4/3  ¡÷  (y+2)/(x-1) = -4/3 ¡÷  3y+6 = 4-4x  ¡÷  3y+4x = -2
(5-y)/(2-x) = 3/4   ¡÷  20-4y =6-3x     ¡÷  4y - 3x =14
4y - 3x = 14 ¡÷ 4y =14 + 3x  ¡÷y = (14+3x)/4
±Ny = (14+3x)/4 ©ñ¤J3y+4x = -2
3(14+3x)/4 +4x = -2 ¡÷ 3(14+3x)+16x = -8  ¡÷ 42+9x+16x=-8 ¡÷  25x= -50 ¡÷ x = -2
±Nx=-2©ñ¤J4y -3x =14
4y - 3(-2) =14  ¡÷  4y-(-6) =14 ¡÷4y +6 =14  ¡÷4y=8 ¡÷y=2


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[ ¥»©«³Ì«á¥Ñ jamzjam ©ó 2010-8-20 02:48 ½s¿è ]
§@ªÌ: satzuna    ®É¶¡: 2010-8-20 12:13



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§@ªÌ: ¬P°¨    ®É¶¡: 2010-8-20 13:14



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§@ªÌ: satzuna    ®É¶¡: 2010-8-20 13:32



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§@ªÌ: ¯u¥Ð    ®É¶¡: 2010-8-20 20:27

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