[請益] 挫曲有效長度哪邊能找的到推導證明?
如題
我想找這幾個的
http://ppt.cc/c33k
我只知道是用2階ODE跟邊界條件去證明的
但GOOGLE找不到圖裡這幾個的證明
有高手知道的嗎?感恩
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