find all relative extrema of the function f(x)=x^(4/5)-1. use the second derivative test where applicable

Question

anonymous · Answer

So the first step is to differentiate the function. That is the method for determining the relative extrema. Can you take the first derivative of f(x)?

anonymous · Answer

um its $$\frac{ 5 }{ 6 } x ^{6/5}$$?

anonymous · Answer

Are you starting with the following?$$f(x)=x^{4/5}-1$$

anonymous · Answer

yes

anonymous · Answer

Okay. Well that's incorrect. I'm not quite sure what you did. To me it appears you just increased the numbers by 1 and then multiplied that fraction down in front, so I think you might be a bit confused about taking a derivative.

To take the derivative:|dw:1418868397710:dw|