This is the problem.
Find the first and second derivatives.
y=[(x^(2)-7)/56x][(x^(4)+1)/x^3]
So do I multiply across first or use quiotient rule for each of them?
$\displaystyle y= \bigg(\frac{x^2-7}{56x}\bigg)\bigg(\frac{x^4+1}{x^3}\bigg)$
if we simplify it like this it will be easier i think
$\displaystyle
=\bigg(\frac{x^2}{56x}-\frac{7}{56x}\bigg) \bigg(\frac{x^4}{x^3}+\frac{1}{x^3}\bigg)
$
$\displaystyle =\bigg(\frac{x}{56}-\frac{1}{8x}\bigg) \bigg(x+\frac{1}{x^3}\bigg)$
$\displaystyle
= \bigg(\frac{x^2}{56}+\frac{1}{56x^2}-\frac{1}{8}-\frac{1}{8x^4}\bigg)
$
you can differentiate them one by one, factor out constants
and for the second derivative try to simplify the result of the first derivative as much as you can then start to differentiate it again.