物理竞赛中有一类的题都与微元法有关,请问下面这题怎么解?还有这类题怎么解?与微积分有关吗?要详解.
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![物理竞赛中有一类的题都与微元法有关,请问下面这题怎么解?还有这类题怎么解?与微积分有关吗?要详解.](/uploads/image/z/8318043-27-3.jpg?t=%E7%89%A9%E7%90%86%E7%AB%9E%E8%B5%9B%E4%B8%AD%E6%9C%89%E4%B8%80%E7%B1%BB%E7%9A%84%E9%A2%98%E9%83%BD%E4%B8%8E%E5%BE%AE%E5%85%83%E6%B3%95%E6%9C%89%E5%85%B3%2C%E8%AF%B7%E9%97%AE%E4%B8%8B%E9%9D%A2%E8%BF%99%E9%A2%98%E6%80%8E%E4%B9%88%E8%A7%A3%3F%E8%BF%98%E6%9C%89%E8%BF%99%E7%B1%BB%E9%A2%98%E6%80%8E%E4%B9%88%E8%A7%A3%3F%E4%B8%8E%E5%BE%AE%E7%A7%AF%E5%88%86%E6%9C%89%E5%85%B3%E5%90%97%3F%E8%A6%81%E8%AF%A6%E8%A7%A3.)
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