带边界条件的四阶微分方程符号解

cbsz

syms x z A B C D
0 t+ @" h( k/ v8 o; u0 T( tDSolve[x''''[z] == -Azx[z], x''[0] = B, x''[D] = C, x'''[0] = 0, x'''[D] = 0]
- X. d7 N# ~, J: \5 d" K5 Z5 G8 ?第二行的格式应该怎么写？
3 f9 P; q( K; d! ZZ是X的变量，求X的符号解

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]
& }5 e, ^1 a6 [- m3 x

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]
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