電力系統 電力潮流求解 - 考試
By Linda
at 2013-05-03T01:46
at 2013-05-03T01:46
Table of Contents
http://ppt.cc/WzZE
想請教的是觀念的部分
圖片中P2對δ2的偏微分
cosδ的微分應該是-sinδ才對
為什麼會沒有加上負號???
另外Q2對δ2的偏微分也一樣
sinδ的微分應該是cosδ
為什麼負號會消掉???
請大師為我解惑...感恩!
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考試
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By Irma
at 2013-05-06T09:49
at 2013-05-06T09:49
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at 2013-05-11T03:50
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at 2013-05-15T00:34
at 2013-05-15T00:34
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