書衡's notes (3) 

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Chanwrote:
第一次在space里面写东西啊,谢谢小师妹的支持,西西。
为别人卖命的时候,时间就由不得自己啊,但是能学到点东西就是最大的安慰。
June 9
No namewrote:
知道导数公式,不就知道曲线了么,最多差一个常数,茫然中~说的具体点嘛
May 8
yaji 袁wrote:
...
Dec. 19