Haskell

6.

Consider the function

pair x y = (x,y)

What is its type? (5 points). Why can "x" and "y" correspond to

different types here, as well? (5 points)

7.

Consider the function

double x = x*2

What is its type? (5 points). Why are there the particular class

constraints on "x" and the return type of "double"? (5 points)