Hi every one
i got my master degree in engineering and now i want to continue my education at Phd level (maybe in Mathematical Economics) but i have forgotten most of mathematics i had learned at the time.
i have a trouble finding a book(s) or any other way to brush up my Mathematics skills for Phd level, but i don't know where and how to start.
it's kinda discouraging....
any help what can i do, any good book(s) that i can brush up my Math skills quickly?