Question

Evaluate the function at each specified value of the independent variable and simplify. (If an answer is undefined, enter UNDEFINED.) f(x) = x + 1 + 2 (a) f(−1) = (b) f(3) = (c) f(x − 1) =

Answer 1

a.
`f(-1)=2`

b.
`f(3)=6`

c.
`f(x-1)=x+2`

Explanation:

We are given that
`f(x)=x+1+2`

a.We have to find the value of f(-1)

Substitute the value of x in the given function

Then, we get

`f(-1)=-1+1+2=2`

`f(-1)=2`

b.We have to find the value of f(3)

Substitute x=3 then we get

`f(3)=3+1+2=6`

`f(3)=6`

c.We have to find the value of f(x-1)

Replace x by x-1 then we get

`f(x-1)=x-1+1+2=x+2`

Hence,
`f(x-1)=x+2`