The domain for f(x) and g(x) is the set of all real numbers. Let f(x) = 3x + 8 and g(x) = x2. Find (f • g)(x).

Question

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 8 and g(x) = x2.

Find (f • g)(x).

3×3 + 3×2 + 8

3×2 + 8

x2 − 3x − 8

3×3 + 8×2

0

Answers ( No )

    0
    2021-10-11T06:09:21+00:00

    Answer:B

    Step-by-step explanation:

    0
    2021-10-11T06:09:49+00:00

    Answer:

    3x^2 + 8  

    Step-by-step explanation:

    Given functions,

    f(x) = 3x + 8 ----(1)

    g(x) = x^2 -----(2)

    Since,

    (fog)(x) =  f( g(x) )      ( Composition of functions )

    =f(x^2)             ( From equation (2) )

    =3x^2 + 8          ( From equation (1) )

    Hence,

    (fog)(x)=3x^2 + 8  

    Second option is correct.

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