Let [tex]h(x) = (g[/tex] °[tex]f)(x) = \sqrt[]{x+3}[/tex]

Which of the following could be a possible decomposition of h(x)?

Let texhx gtex texfx sqrtx3tex Which of the following could be a possible decomposition of hx class=

Respuesta :

Answer:

D. [tex]f(x)= x+3[/tex] and [tex]g(x)=\sqrt{x}[/tex]

Step-by-step explanation:

We are given that,

Composition of two functions f and g is given by,

[tex]h(x) = (g\circ f)(x) = \sqrt{x+3}[/tex].

According to the options:

A. [tex]h(x) = (g\circ f)(x) = g(3x)=\sqrt{3x}[/tex]

B. [tex]h(x) = (g\circ f)(x) = g(x)=x+3[/tex]

C. [tex]h(x) = (g\circ f)(x) = g(\sqrt{x})=\sqrt{x}+3[/tex]

D. [tex]h(x) = (g\circ f)(x) = g(x+3)=\sqrt{x+3}[/tex]

Thus, we see that, option D is correct.

Hence, [tex]f(x)= x+3[/tex] and [tex]g(x)=\sqrt{x}[/tex] is a possible decomposition of h(x).

Answer:

Choice D   is correct answer.

Step-by-step explanation:

We have given composition of two functions.

h(x) = (gof)(x) = √x+3

We have to find the two functions whose composition is given.

The formula to find the composition of functions:

(gof)(x) = g(f(x)

Choose f(x) = x+3

(gof)(x)  = g(x+3)

Choose g(x) = √x

(gof)(x) = √x+3  

Hence, answer is f(x) = x+3 and g(x) =√x