Question

If f: R → R is defined by f(x) = x and g: R→R is defined by g(x) = x then (fog) (x) is
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Answer 1

As
`R → R` is defined by
`f(x) = x` and
`g(x) = x`,

So,
`f` and
`g`have the same domain. Therefore,

`(fog)(x) = f(g(x)) = f(x) = x`