簡單的數學問題請教 - 考試
By Zanna
at 2014-05-20T07:00
at 2014-05-20T07:00
Table of Contents
※ 引述《hover2009 (Hover)》之銘言:
: [課業] 國考課業相關問題,非歷屆考題的討論,如學理觀念的釐清。
: 如下圖所示:
: http://ppt.cc/x1S7
: 如果不用計算機打,要怎麼快速求解呢?
: 感恩
心算不就可以了?
根號外的pi跟根號裡面剛好抵銷,不用理
根號裡面是40*10負九次方= 4*10負8次方
開根號出來就是2*10負4次方
結果就是10^4/4=2500
--
: [課業] 國考課業相關問題,非歷屆考題的討論,如學理觀念的釐清。
: 如下圖所示:
: http://ppt.cc/x1S7
: 如果不用計算機打,要怎麼快速求解呢?
: 感恩
心算不就可以了?
根號外的pi跟根號裡面剛好抵銷,不用理
根號裡面是40*10負九次方= 4*10負8次方
開根號出來就是2*10負4次方
結果就是10^4/4=2500
--
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考試
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