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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 30-12-2009 07:38 PM
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对了,你们很厉害咧! |
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发表于 30-12-2009 07:39 PM
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回复 walrein_lim88
顺便问一下,怎样才可以打得出完美的fraction和equation?
Enceladus 发表于 30-12-2009 07:37 PM
我是用MICROSOFT WORD的EQUATION EDITOR 打的。。。 |
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发表于 30-12-2009 07:41 PM
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发表于 30-12-2009 07:48 PM
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The area,A cm2, of a blot of ink is growing such that after t seconds ,it is given by A=3t2=1/5t. Find the rate at which the area is changing after 2 seconds.
Answers=12.2 cm2s-1
晕头转向,要变成太阳系了。。。。。。。。。。{:2_71:} |
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发表于 30-12-2009 07:49 PM
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之前我做这个chapter 9,20题错了12题。。。。。。。。。。 |
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发表于 30-12-2009 07:50 PM
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发表于 30-12-2009 07:55 PM
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如果我再不快点搞掂这课的话,明年SPM肯定败北了。 |
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发表于 30-12-2009 07:56 PM
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3t power of 2 +1 over 5(t) |
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发表于 30-12-2009 07:57 PM
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发表于 30-12-2009 08:04 PM
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我要怎样upload图片,我的老牙电脑没有equation editor |
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发表于 30-12-2009 08:07 PM
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我的第九课根本就是雾里探花,懂一部分不懂一部分的。 |
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发表于 30-12-2009 08:24 PM
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tips: 问题问 rate of change of area就是 dA/dt when t = 2 seconds |
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发表于 30-12-2009 08:24 PM
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发表于 30-12-2009 08:25 PM
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3t power of 2 +1 over 5(t)
Enceladus 发表于 30-12-2009 07:56 PM
A=3t² + t/5 |
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发表于 30-12-2009 08:27 PM
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发表于 30-12-2009 08:28 PM
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发表于 30-12-2009 08:30 PM
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回复 470# walrein_lim88
我现在先下线了,如果你们帮我解决了我的疑难杂症,我在此先说谢谢。 |
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发表于 30-12-2009 08:35 PM
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回复 470# walrein_lim88
非常感谢你拨时间指点我。 |
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楼主 |
发表于 30-12-2009 09:14 PM
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The area,A cm², of a blot of ink is growing such that after t seconds, it is given by A=3t²+(1/5)t. Find the rate at which the area is changing after 2 seconds.
A=3t²+(1/5)t
dA/dt = 6t + 1/5
When t = 2 seconds, dA/dt = 12.2 cm²sˉ’
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发表于 30-12-2009 09:30 PM
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