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【纪念当年的帖子(2008)】高級數學纲要笔记
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发表于 23-5-2008 06:06 PM
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发表于 23-5-2008 06:08 PM
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发表于 23-5-2008 06:12 PM
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发表于 24-5-2008 10:04 AM
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楼主可一放一下F4 Chp9 Diffrentiation 的note 吗? 我最不会的是这课里面的"rate of change " 了。  |
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发表于 24-5-2008 10:25 AM
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发表于 24-5-2008 10:40 AM
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发表于 25-5-2008 11:39 AM
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发表于 25-5-2008 11:40 AM
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发表于 25-5-2008 11:43 AM
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发表于 25-5-2008 12:22 PM
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发表于 26-5-2008 09:50 PM
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發問。。。THE SEQUENCE -30,-22,-14,...IS AN A.P.fIND THE SUM FROM 9TH TERM 2 14TH TERM.答案給324... |
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发表于 26-5-2008 09:54 PM
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a=-30,d=8
题目要问的是S14-S8
S14-S8 = 7(-60+13(8)) - 4(-60+7(8)) = 324 |
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发表于 26-5-2008 09:59 PM
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回复 152# 喪婆akina 的帖子
Given for the A.P., a= -30, d=8
S_14 - S_8
= (14/2)[ 2(-30) + (13)8] - (8/2)[2(-30) + (7)8 ]
=324 |
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发表于 26-5-2008 10:26 PM
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发表于 26-5-2008 10:27 PM
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发表于 26-5-2008 10:33 PM
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发表于 26-5-2008 10:56 PM
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发表于 27-5-2008 12:05 PM
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此帖让我感到获益匪浅 |
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发表于 27-5-2008 12:20 PM
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发表于 27-5-2008 03:40 PM
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