Math Help - Find derivative

1. Find derivative

I have an example with the answer but the book doesn't show the steps on how to get the answer. Could someone kindly explain what steps are needed to get the answer?

Q&A:

2. Originally Posted by Lovely07
I have an example with the answer but the book doesn't show the steps on how to get the answer. Could someone kindly explain what steps are needed to get the answer?

Q&A:

3. Also note that $f(x)= x+ \frac{1}{x}= x^1+ x^{-1}$.