带边界条件的四阶微分方程符号解

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syms x z A B C D
) ]- Q% m1 \7 t0 qDSolve[x''''[z] == -Azx[z], x''[0] = B, x''[D] = C, x'''[0] = 0, x'''[D] = 0]
( m! _* L. N4 t4 s! ]" R1 z第二行的格式应该怎么写？
; T1 C, x3 ^9 w  W. ^9 aZ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]
2 q" \6 \$ M+ T( C" }8 k/ z

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]
4 \$ s4 c- Y0 f; k0 ^5 t3 E