write a formal mathematical description of f

Let X be the set {1,2,3,4,5) and Y be the set {6,7,8,9,10). The unary function f : X Y and the binary function g:XXY Y are described in the following tables: n 1 2 3 4 5 WN f(n) 4 3 10 7 16 g(';') 6 7 8 9 10 1 10 10 10 10 10 10 27 8 9 10 6 37 7 8 8 9 4 9 8 7 6 10 5 6 6 6 6 6 o