Ok, so what i do know is that i should expand these summations and then look for a pattern? Then, i assume that im suppose to derive sometype of formula? Im kind of unsure whats the whole purpose of riemann sums ecept for just summing a whole bunch of numbers.

1. Start with inner summation

Kind of like nested integrals i was told that you should evaluate the inner summation, and then work your way to the outer.

So when i expand the inner loop i get $\displaystyle n+2n+3n+4n +...+ jn, and\ this\ is\ when\ j=n $

2. Expand outer summation

$\displaystyle n+2n+3n+4n+ ... +ni, and\ this\ is\ when\ i = n $

Im confused on what to do next.

PS: I will have one Riemann sum problem to ask tonight, but i will make sure to try and get far on it as much as possible before i post to the forums. Thanks!