Question

What is the approximate value of `f(x)=((2-x)/(2+x))^(1/5)` at `x=0.15`?

Answer 1

`f(0.15) ~~ 0.97`

Explanation:

`f(x) =((2-x)/(2+x))^(1/5)`

`f(0.15) =((2-0.15)/(2+0.15))^(1/5)` or

`f(0.15) =(1.85/(2.15))^(1/5)` or

`f(0.15) ~~(0.86)^(1/5) ~~ 0.97 (2 dp)`

`f(0.15) ~~ 0.97 (2 dp)` [Ans]