derivative, increasing or decreasing

[bcddd214]

I get here and freeze. Not even sure if I am going in the right direction.

For the following function name the interval where the function in increasing and where it is decreasing.
f(x)=1/(x^2-2)
=(x^2-2)^(-1)
2x

 

[tkhunny]

Where did '2x" come from?

You have two version of f(x). Where is f'(x)?

f'(x) = [-(x^2 - 2)^(-2)](2x)

Look at it very carefully.

 

[bcddd214]

Where did '2x" come from?

You have two version of f(x). Where is f'(x)?

f'(x) = [-(x^2 - 2)^(-2)](2x)

Look at it very carefully.

So you don't give a leading step, only criticism?
Not helpful at all
Still stuck, same place.
Your post provide no clue.

 

[tkhunny]

This was one of my best clues of your intent. I gave you the answer to teh complicated derivative and you still had no idea how to proceed. Please drop this class and retake the prerequisites.