  f(x)=x^(2/3) * (x-5) a) Find the Domain b) Find f prime of x c) Find the intervals where it is increasing and decreasing d) Find the local min and max values e) Find f double prime of x f) Find the intervals where it is concave up and down g) Find the inflection pints or critical points h) Sketch a graph Where are the functions undefined and where do they equal zero? Have fun! If anyone really wants to know the answer I will post it :) This is what I am working on now. 
