Category Archives: 網友分享

二梯度的外積的散度為零之證明

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) Advertisements

Posted in 特別主題, 網友分享 | Tagged , | Leave a comment

譜分解的簡易證明

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

Posted in 特徵分析, 網友分享, 線性代數專欄 | Tagged | Leave a comment