Consider the problem of maximizing the utility function u = f(c) +
g(s) subject to the budget constraint pc+s = y, where c is consumption
and s is savings.  Derive and interpret the Slutsky equations and
explain what happens if g??(s) = 0.

(I was trying to do this myself, and i saw in the textbook they used
matricies, i would like to it explained that way if possible!)

thanks !