### Solving 2 ODE's with One Unknown

Given that: dMN/dt = P¬oert - pMN + m(MS - MN) dMS/dt = m(MN - MS) - pMS¬ MN¬ (0) = MS (0) = 0 And using: M¬N + MS = [Po/(r + p)](ert - e-pt) Show that MS(t) = And show that R = MN(t) / MS(t) = Please see the attached file for the fully formatted problems.