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Solving Nonlinear Differential Equations using DSolve in Mathematica
Posted:
Apr 20, 2010 10:01 AM


Hello!
I'm having a problem solving non linear ordinary differential equations: when I try to solve this system, I get this error "Equations may not give solutions for all "solve" variables."
The system is this:
DSolve[{X8'[t] == C1  C2  k1*X1[t]*X8[t], X8[t1] == X8t1, X2'[t] == (k2)*X2[t] + k1*X1[t]*X8[t],X2[t1] == X2t1, X3'[t] ==k2*X2[t]  k4*X3[t]*X4[t],X3[t1] == X3t1, X1[t] == PT  X2[t]  X3[t], X4'[t] == (k4)*X3[t]*X4[t] + k5*X5[t],X4[t1] == X4t1, X5[t] == TRXT  X4[t]}, {X1[t],X8[t],X2[t],X3[t],X4[t],X5[t]}, {t}]/.t>t1 + d T
Can anyone please help me figure out how to solve this error?
Thanks so much for all the help



