Question

Define identity function.Also write its graph.Domain and range of the function

Answer 1

Answer:

Let R be the set of real numbers. Thus, the real-valued function f : R → R by y = f(a) = a for all a ∈ R, is called the identity function. Here the domain and range (codomain) of function f are R. Hence, each element of set R has an image on itself.

Step-by-step explanation:

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