你不会真以为有人上虎扑是来解偏微分方程的吧🐶

我就喜欢你这种阴阳怪气的语气哈哈哈哈哈哈！🐶

楼主好好翻翻书啊，固定就是第一类边界条件，自由就是第二类边界条件啊。

书上就有，看不懂就硬背，数物方程太长了，去年刚学忘了🐵

偏微分方程这门课是真的走出考场的时候全忘完了🐶

方程都是一样的，自由和固定得边界条件不同，一样得分离变量之后带入边界条件就好了

我理解的自由边界条件应该是\partial u/\partial t＝0，你把这个边界条件代进去试试

这破课我记得，繁琐得一匹，把我学习兴趣都磨没了

<img src="https://i4.hoopchina.com.cn/hupuapp/bbs/301/30808301/thread_30808301_20201118195030_s_9599_w_512_h_512_7659.jpeg"/>不会是sdut光电的吧

要考试了心慌求JRs看解方程的题第二题一端固定一段自由怎么写呢只知道两端都固定的令麻烦看看另外两道题觉得对不对万分感谢🙏<div><center class="hupu-img" data-h="1067"data-w="800" data-origin="https://i11.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191208_s_139154_o_w_800_h_1067_26822.jpg?x-oss-process=image/format,png" data_url="https://i11.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191208_s_139154_o_w_800_h_1067_26822.jpg?x-oss-process=image/resize,w_1000/format,png" src="https://i11.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191208_s_139154_o_w_800_h_1067_26822.jpg?x-oss-process=image/resize,w_600/format,jpg/quality,Q_60" data-imgid="7ca1ed1cb2fc1ba6fd70a3367a6f45a6" ></center></div><div><center class="hupu-img" data-h="4032"data-w="3024" data-origin="https://i2.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1995661_o_w_3024_h_4032_82422.jpg?x-oss-process=image/format,png" data_url="https://i2.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1995661_o_w_3024_h_4032_82422.jpg?x-oss-process=image/resize,w_1000/format,png" src="https://i2.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1995661_o_w_3024_h_4032_82422.jpg?x-oss-process=image/resize,w_600/format,jpg/quality,Q_60" data-imgid="1db9b97c2cf6044cf80ee1cdd88fa834" ></center></div><div><center class="hupu-img" data-h="4032"data-w="3024" data-origin="https://i10.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1850908_o_w_3024_h_4032_40809.jpg?x-oss-process=image/format,png" data_url="https://i10.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1850908_o_w_3024_h_4032_40809.jpg?x-oss-process=image/resize,w_1000/format,png" src="https://i10.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1850908_o_w_3024_h_4032_40809.jpg?x-oss-process=image/resize,w_600/format,jpg/quality,Q_60" data-imgid="e99141661d447f784158df7911c3f32c" ></center></div><div><center class="hupu-img" data-h="4032"data-w="3024" data-origin="https://i1.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191210_s_1923885_o_w_3024_h_4032_56075.jpg?x-oss-process=image/format,png" data_url="https://i1.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191210_s_1923885_o_w_3024_h_4032_56075.jpg?x-oss-process=image/resize,w_1000/format,png" src="https://i1.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191210_s_1923885_o_w_3024_h_4032_56075.jpg?x-oss-process=image/resize,w_600/format,jpg/quality,Q_60" data-imgid="0ce7e97a7e1845770b9027bb78e95ae2" ></center></div>

要考试了心慌求JRs看解方程的题第二题一端固定一段自由怎么写呢只知道两端都固定的

会数学物理方法的JRs

虎扑JR1308750494

要考试了心慌求JRs看解方程的题第二题一端固定一段自由怎么写呢只知道两端都固定的令麻烦看看另外两道题觉得对不对万分感谢🙏<img src="https://i11.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191208_s_139154_o_w_800_h_1067_26822.jpg" data-h="1067" data-w="800" data-imgid="7ca1ed1cb2fc1ba6fd70a3367a6f45a6"/><img src="https://i2.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1995661_o_w_3024_h_4032_82422.jpg" data-h="4032" data-w="3024" data-imgid="1db9b97c2cf6044cf80ee1cdd88fa834"/><img src="https://i10.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191209_s_1850908_o_w_3024_h_4032_40809.jpg" data-h="4032" data-w="3024" data-imgid="e99141661d447f784158df7911c3f32c"/><img src="https://i1.hoopchina.com.cn/hupuapp/bbs/94935506730204/thread_94935506730204_20210110191210_s_1923885_o_w_3024_h_4032_56075.jpg" data-h="4032" data-w="3024" data-imgid="0ce7e97a7e1845770b9027bb78e95ae2"/>

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