在书上没见过微分方程组的求解的，但这次遇到一个问题是两个微分方程联立的，按照方程组的解法打进去解不出来，所以求各位大佬帮我解答疑难，二楼贴代码

\[Rho] = 1000, g = 9.8, h2 = 1.2, h1 = 0.5, v = 4*10^-4, s =
0.1^2*Pi, p0 = 1.01*10^5, dh = 0.00001;
S = DSolve[{\[Rho] g h2 - \[CapitalDelta]p1 -
p0 (v - x2[t] s + x1[t] s)/v == \[Rho] dh x2''[t] &&
p0 (v - x2[t] s + x1[t] s)/
v - \[Rho] g h .1 - \[CapitalDelta]p2 == \[Rho] dh x1''[t],
x1[0] == 0, x2[0] == 0}, x1[t], x2[t], t]
Clear["Global`*"];

新的是这个样子的

……要分清楚分号和逗号。
{\[Rho] = 1000, g = 9.8, h2 = 1.2, h1 = 0.5, v = 4*10^-4, s = 0.1^2*Pi, p0 = 1.01*10^5,
dh = 0.00001};
S = DSolve[{\[Rho] g h2 - \[CapitalDelta]p1 -
p0 (v - x2[t] s + x1[t] s)/v == \[Rho] dh x2''[t] &&
p0 (v - x2[t] s + x1[t] s)/v - \[Rho] g h .1 - \[CapitalDelta]p2 == \[Rho] dh x1''[
t], x1[0] == 0, x2[0] == 0}, {x1[t], x2[t]}, t]