Question

G(n) = 4n+5 f(n)= n^3+3n^2 find (g+f)(n)

Answer 1

Given:

The two functions are:

`g(n)=4n+5`

`f(n)=n^3+3n^2`

To find:

The function
`(f+g)(n)`.

Solution:

We have,

`g(n)=4n+5`

`f(n)=n^3+3n^2`

Now,

`(f+g)(n)=f(n)+g(n)`

`(f+g)(n)=n^3+3n^2+4n+5`

Therefore, the correct option is B.