- #1

atrus_ovis

- 101

- 0

Sum(i) , from i=1 to i=n

which apparently equals n(n+1)/2

-Is there a way to derive this from the sum, or you just have to use your intuition and think through what exactly is being summed and the range of summation?

-Do you have any resources to offer, that includes all the common sums and its closed forms?

Thanks in advance