I have
$f'_1(t)=-af_1(t)f_2(t)+bf_3(t)$
$f'_2(t)=f_1(t)$
$2f'_3(t)=-f_1(t)$
How is it possible to evaluate fixed points of this system of equations and afterwards the stability of these points. I only know how to do it for simple equations like $x_{n+1}=f(x_n)$