I have tried a few things, my problem is that I cannot seem to find a general formula for
I know that
But that is only order 2. I don't know if there is a general method for order p.
Do you know to convert summations to integrals? Consider the curve . If we try to approximate the area by dividing the x-axis into pieces chosen in two different ways, you can solve the problem. Also compare your approximations to the integrals to get the inequalities..