Thread: Product and Quotient Rule with Derivatives

The problem is:
F(x) = ((1/y^2) - (2/y^4)) (y + 8y^3)

I can find derivatives from other functions, but my professor has neglected to tell us how to do it with functions like this. I have tried this problem many times, with varying answers: It is so frustrating. I have used the product rule right away, or I have multiplied it out first and then used to power rule to find f'(x), but I keep getting the wrong answer. Please explain how to get the right answer and walk me through the question step by step. Thank you so much.

Well now you can use power rule on this:

So



oh crap I misread a parenthesis. (fixing that now)

There that's it.