kuange的个人空间

kuange： jjjjjjjjjjjjjjjjjjjfffffcftvtdgjjjjjjjjjjjjjjjjjjjjjjhf

hnhhhhhh

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2010-02-21 20:06 来自版块 - 

kuange： 题题

老师，这题我不会啊。

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2010-02-21 13:46 来自版块 - 

kuange： hhhh

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

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2009-11-29 17:13 来自版块 - 

kuange： 题

1.(★★★★)等比数列{an}的首项a1=－1,前n项和为Sn,若 ，则 Sn等于( ) C.2D.－2

2009-11-27 18:59 来自版块 - 

kuange： 直线和圆的方程

直线和圆的方程是很重要的，可是学不懂怎么 办？以前基础没有打好，像三角函数就没学懂。

2009-11-23 17:40 来自版块 -