Question

If f(x) = 2x- 4/x , what is f(a + 1)?

Answer 1

.Solution

Given

`f\left(x\right)=2x-(4)/(x)`

We are required to find f(a+1)

`\mathrm{For}\:f=2x-(4)/(x)\:\mathrm{substitute}\:x\:\mathrm{with}\:a+1`
`\begin{gathered} =2\left(a+1\right)-(4)/(a+1) \\ \\ \end{gathered}`

The correct option is option D