Loridunn420 Loridunn420
  • 16-08-2019
  • Mathematics
contestada

Determine the domain of the function (f*g)(x) where f(x) =3x-1/x-4 and g(x) =x+1/x

Respuesta :

Cricetus
Cricetus Cricetus
  • 25-08-2019

Answer:

Domain = R- {0,4}

Step-by-step explanation:

[tex]f(x) =\frac{3x-1}{x-4}[/tex]

[tex]g(x) =\frac{x+1}{x}[/tex]

[tex](f*g)(x)=\frac{3x-1}{x-4} \times \frac{x+1}{x}[/tex]

[tex](f*g)(x)=\frac{(3x-1)(x+1)}{(x-4)(x)}[/tex]

In order to function (f*g)x to be defined , the Denominator must not be equal to zero.

Hence

x ≠ 0

(x-4) ≠ 0 ⇒ x≠4

Hence (f*g)x is defined for all values of x except 0 and 4

Hence Domain = R- {0,4}

Answer Link
DaNaishaGill05 DaNaishaGill05
  • 13-08-2021

Answer:

(-00,4)U(4,00)

Or C

Answer Link

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