Question

Which expression is equivalent to (f + g)(4)?

f(4) + g(4)

f(x) + g(4)

f(4 + g(4))

4(f(x) + g(x))

Answer 1

Answer: Option A

Explanation:

Answer 2

Answer:
`f(4)+g(4)`

Explanation:

For any functions f and g on x , the sum of functions
`(f+g)(x)` is equivalent to
`f(x)+g(x)`

OR

`(f+g)(x)=f(x)+g(x)`

Thus, for x=4 we have

`(f+g)(4)=f(4)+g(4)`

The expression
`f(4)+g(4)` is equivalent to
`(f+g)(4)`

f(4) and g(4) means that we should find the value of our function when x equals 4.

(f+g)(4) means we should find the value of our function as sum, when x equals 4.