Category Archives: 網友分享

二梯度的外積的散度為零之證明

Posted on 08/24/2015 by ccjou

網友林聖興： 老師您好，看見有人對於“梯度、散度與旋度”第14條公式有疑問 (註：)，我一時好奇，試著推演看看，答案是 ，沒錯！ 以MathType打字，附檔裡面有彩色，我不大會用LaTeX的方式操作網頁回覆，寄給您參考。 div(grad f cross grad g)

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譜分解的簡易證明

Posted on 08/14/2015 by ccjou

網友 Meiyue Shao： I would like to share with you an alternative proof of the statement on the post 可對角化矩陣的譜分解──續篇(上) The proof is quite similar to yours. But likely mine is relatively simple to follow. As you might want to … Continue reading →

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