âThat meant representation for all.â. Since then, the best of North Carolinaâs legislative leaders, though not all, have presided over its chambers with an eye toward good government. But last weekâs session was a reversion to the strong-arm rule that Republicans decried in the 1980s.
An identity function is a function that always returns the same value as its argument. In other words, the identity function is the function f(x) = x. x.
A function is a relation between two sets defined in such a way that for each element in the first set, the value that corresponds to it in the second set is unique. Let f be a function defined from the set A into set B. Then for each x Ïµ A, the symbol f (x) denotes the unique value in the set B that corresponds to x. It is called the image of x under f. Therefore, a relation f from A into B is a function, if and only if for, each xÏµ A and y Ïµ A; if x = y then f (x) = f (y). The set A is called the domain of the function f, and it is the set in which the function is defined. For example, consider the relation f from R into R defined by f (x) = x + 2 for each xÏµ A. This is a function whose domain is R, as for each real number x and y, x = y implies f (x) = x + 2 = y + 2 = f (y).