Let f & g be functions that are differentiable for all real values of x with
g(x) = (f(x))/x. If y=x-3 is an equation of the tangent line to the graph of f at x=1, what is the equation of the tangent line to the graph of g at x=1.
Let f(t)=1/t for t>0. For what value of t is f '(t) equal to the average rate of change of f on [a,b].