How to say e.g. "f(x) = (x + 1) (x − 1)" ? Should I use {fancu} for that? If not how to use {fancu}?
I want an example with all places of {fancu} filled.
fancu = x1 is a function/single-valued mapping from domain x2 to range x3 defined by _expression_/rule x4.
E.g "f(x) = (x + 1) (x − 1)" where x>1
fy fancu xy lo du'u xy zmadu li pa vau li vei xy su'i pa ve'o pi'i vei xy vu'u pa ve'o ?