Here are the questions:
I have posted a link there to this thread so the OP can see my work.How do I find the nth sum of these functions (calculus I)?
My professor explained it very poorly and I have no idea how to solve these.
If possible, could you walk me through it and give me a good way to think about these to solve them properly? It's greatly appreciated, my exam is next week.
1) Sum of i=1 to n of (4-9i)
2) Sum of i=1 to n of (i+1)(i+4)
3) Sum of i=1 to n of (i^3 - i - 2)
4) Sum of i=1 to n of 3/n(i/n)^2
I don't need all of them done, I just need someone to explain how to do these. I'm so confused. I really appreciate your help!