I need to find Ca(t) and Cb(t), solving these two differential equations using the integrating factor method, the initial conditions are 0 and the constant data are:

Q= 0.0015 [L/s]

V= 0.49 [L]

Cai= 4.06 [mol/L]

Cbi= 6.32 [mol/L]

I obtained the final values in matlab of Ca and Cb which are: Ca=0.0048 and Cb= 6.3139