problem with a differential algebraic equation system
Hello, i face problem trying to solve the following differential algebraic equation system:
g(x1,x2,x3,t)=0 =>x1(t)+x2(t)+x3(t)=C(constant value) (specifically this is the algebraic function g analytically)
h(x1,x2,x3,x4,x5,t,z)=0 (algebraic function h is more complicated, it includes log function also between the unknown variables)
If you could give me a method to solve it , i would be gratefull.
Till now i'm using numerical analysis to solve it (using ode23 function from matlab), but i do not know how to solve the differential equations in parallel with the algebraic ones.
Thank you in advance