I tutor math grades 4-8 or so, and I got a question that involved the prime f of a set. I wound up having to pass it on because frantic googling only came up with abstract bits and something about inversions. Can anyone point me towards an easier-to-understand explanation of how it works? :|a
Don't know/don't care: SO MY 21ST BIRTHDAY IS COMING UP. :D What did you do/plan to do for yours?