带边界条件的四阶微分方程符号解

cbsz

syms x z A B C D
7 X% e+ z! ]! }) r  A1 {8 wDSolve[x''''[z] == -Azx[z], x''[0] = B, x''[D] = C, x'''[0] = 0, x'''[D] = 0]
1 |  o7 ?) x, i* m) K6 K4 o第二行的格式应该怎么写？
8 W* U% c+ S0 }3 ~0 {  }0 w: a# FZ是X的变量，求X的符号解
* m% v+ |  \) s, n0 y

cbsz

自己回答下，DSolve[{x''''[z] == -Azx[z], x''[0] == B, x''[d] == 0, x'''[0] == C, x'''[d] == 0}, x, z]
* B, x2 n# Y1 `! l9 {& f# S3 h/ s- d

cbsz

自己回答下，DSolve[{x''''[z] == -Azx[z], x''[0] == B, x''[d] == 0, x'''[0] == C, x'''[d] == 0}, x, z]