Specify the domain of $( g \circ f ) ( x )$ for the pair of functions f ( x ) = 2 x + 3 and g ( x ) = x 2 + 9.
A) $( - \infty , \infty )$
B) $( - \infty , 0 )$
C) $( - \infty , 0 ) \cup ( 0 , \infty )$
D) $( 0 , \infty )$

Question

Quizplus · Accepted Answer

Since both f(x) and g(x) are defined for all real numbers, their composition (g ◦ f)(x) is also defined for all real numbers (-∞, ∞).

Specify the Domain Of (g∘f)(x)( g \circ f ) ( x )(g∘f)(x)

Specify the Domain Of $( g \circ f ) ( x )$