Let y = f ( x ) = 63 x 2 / 7 − 14 x 9 / 7 {\displaystyle \displaystyle y=f(x)=63x^{2/7}-14x^{9/7}} . Sketch the graph of y = f ( x ) {\displaystyle \displaystyle y=f(x)} and indicate the inflection point(s) on your graph. (The results from parts (a), (b), and (c) may be useful.)
. Sketch the graph of 
and indicate the inflection point(s) on your graph. (The results from parts (a), (b), and (c) may be useful.)
