Need finding the composition of two rational functions. i attached a screenshot of the question i could use some with

using (f ○ g )(x) = f(g(x))

f(g(x) =f( )

substitue x = in f(x)

= / - 3 ×

=

the denominator of f(g(x)) cannot be zero as this would make f(g(x)) undefined. Equating the denominator to zero and solving gives the value that x cannot be

solve 1 - 3x = 0 ⇒ - 3x = - 1 ⇒ x = ← excluded value

domain is x ∈ (- ∞, ) ∪ (, + ∞ )

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step-by-step explanation: