Question

Find the value of the derivative of the function at the given point.
f(x) = 5x/x^2 + 8,
(−1, −5/9)
f '(−1) =

Answer 1

So first step is to take derivative of the function right?

Answer 2

???

Answer 3

If it is first step I get -5*(x^2-8)/x^2+8^2... But do I just plug the -1 in for x because it wants to know a f" (-1) ?

Answer 4

Is that equatio of the function \[5x \over x ^{2}+ 8\]or is it