<img src="https://zk.995w.com/lqwvjeImg/2c/2c95f56c62ee75f9e5448f81362e7f9d.png">( )<br>· 分离变量<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解本征值问题<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解其他常微分方程并得分离变量解<img src="https://zk.995w.com/lqwvjeImg/4d/4d790540cb0a563f0e89eecdb479c3e5.png"style="width:20px;height:16px;">叠加<br>· 分离变量<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解其他常微分方程<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解本征值问题并得分离变量解<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">叠加<br>· 解本征值问题<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">分离变量<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解其他常微分方程并得分离变量解<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">叠加<br>· 解本征值问题<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">分离变量<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">叠加<img src="https://zk.995w.com/lqwvjeImg/a2/a2fb07ad9b5f5da4c9ddd3fb89ccb235.png"style="width:20px;height:15px;">解其他常微分方程并得分离变量解