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Vesna [10]
3 years ago
14

If f(x)=3x and g(x)=2x what is (gof)(x)?

Mathematics
2 answers:
Artyom0805 [142]3 years ago
8 0

Answer:

Given f(x) and g(x), please find (fog)(X) and (gof)(x) f(x) = 2x   g(x) = x+3    

Given f(x) and g(x), please find (fog)(X) and (gof)(x)

f(x) = 2x   g(x) = x+3    

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Quick Answer

(fog)(x) = 2x + 6

(gof)(x) = 2x + 3

Expert Answers

HALA718 eNotes educator| CERTIFIED EDUCATOR

f(x) = 2x

g(x) = x + 3

First let us find (fog)(x)

(fog)(x) = f(g(x)

            = f(x+3)

              = 2(x+3)

              = 2x + 6

==> (fog)(x) = 2x + 6

Now let us find (gof)(x):

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

           = g(2x)

          = 2x + 3

==> (gof)(x) = 2x + 3

Step-by-step explanation:


julia-pushkina [17]3 years ago
8 0

Answer:

(gof)(x) = 6x

Step-by-step explanation:

We have given two function and we have to find their function.

f(x) = 3x and g(x) = 2x

(gof)(x) = ?

The formula to find the composition of two function:

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

Putting the values of given functions ,we get

(gof)(x) = g(3x)

(gof)(x) = 2(3x)

(gof)(x) = 6x which is the answer.

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