iam having problems with this problem, i know the equation of dieterici, but i cant find an example on how to derive the critical constants, there even in no example in the book too,

any help is welcome

"Starting with the Dieterici equation of state, derive the relation between the critical constants Pc, Vc and Tc and the Dieterici equation parameters"

i know what the critical constans are but how do i derive them, iam just looking for exmples it doesnt have to be this specific equation, but any other would do, so that i can see whats going on, because right now i have no idea how to even approche this problem