Maple13求解微分方程出错，求指导~~~

leonardo2008lh

代码下
9 c# [. n8 J( |2 [) G6 P  s0 ?restart：
* Z2 z7 v$ K6 C  x+ tq[off] := Q*exp(-tau*(t-t[off]))；
q[on] := Q*(1-exp(-tau*t))；
deq := diff(T(t), t) = -k*A*(T(t)-Tu)/(M*c)+q/(M*c)；
# Y) q4 v7 y; k3 Q2 U" dsol1 := dsolve({subs(q = q[on], deq), T(0) = T0}, T(t))；
- p" j" y. s/ A' X/ BT[off] := unapply(rhs(sol1), t)；
sol2 := dsolve({subs(q = q[off], deq), T(t[off]) = T[off](t[off])}, T(t))；
9 X3 @' d) \  j# x, L; q2 ~0 t+ s% s" I前面运行都没问题，最后一行出错，显示：
Error, (in type/DEtools/ODE_IC) found the independent variable, t, also present as an indexed variable, t[off]
刚刚学maple，不知道怎么改错，求高手指导~~~

zhd17101452

括号错误括号错误括号错误

linmatsas

不懂啊~~~~~占个沙发~~~~我只知道MATLAB还学的不好~~~~