modelling of equations in matlab

hello every one, i am trying to model a equations in matlab/simulink. can some one tell me how to model these equations in simulink as matlab function.

dT_out/dt = (1/(M*C_v))*((M*C_pin*T_in)-(M_out*C_pout*T_out)-(M_in*C_v*T)+(M_out*C_v*T)-(P_in*(dV/dt)));

dP_out/dt = (R/V)*(1/C_v)*((M*C_pin*T_in)-(M_out*C_pout*T_out)-(P_in*(dV/dt)))-((P_in*R)*(dV/dt));

here V is a constant where it has to be differentiated. i tried to model these but i am unable to model those. thank you in advance.

with regards