Does df(x)/dx affiliated to art! given that f(x) expresses the function rate of birth in a particular time for a specific region.
Remember with differentiation and integration (calculus) it will lead you to work on differential equations whereby researchers would
deliver scientific result......knowing into your mind this discussion being undertaken by the word Branch.....with branch then see
where exactly can be affiliated to mwenemutapa kingdom or mputa maseko, zulu and mbonane or the rise and fall of Songhai empire......work out and find the fact.
Thanks.