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visits member for 3 years, 3 months
seen Sep 27 at 23:39

Dec
8
awarded  Notable Question
Dec
7
awarded  Popular Question
Nov
15
awarded  Popular Question
Oct
25
awarded  Popular Question
Sep
17
awarded  Popular Question
Sep
16
comment Calculating running time for C code
@DavidK I think the average would be $\frac{\sum_{j=1}^{N-1} j}{N-1} \rightarrow \frac{\frac{N(N-1)}{2}}{N-1}\rightarrow \frac{N(N-1)}{2(N-1)} \rightarrow \frac{N}{2}$ Right?
Sep
16
awarded  Yearling
Sep
16
comment Calculating running time for C code
Wait...I still don't get how you got from $\frac{N^2}{2}$ to $\frac{N}{2}$.
Sep
16
comment Calculating running time for C code
Didn't you mean from $2$ to $N-1$ when $i=1$ because $j$ is equal to $i+1$?
Sep
14
comment Calculating running time for C code
How did you figure out that it runs $\frac{1}{2}N` times?
Sep
10
accepted A summation that starts from $-\infty$
Sep
10
comment A summation that starts from $-\infty$
I get how you simplified to $2^n \sum_{k = 0}^\infty 2^{-k}$, but not how you got $2^{n+1}$ from that...
Sep
10
comment A summation that starts from $-\infty$
@LordSoth Why do we need to do that?
Sep
10
asked A summation that starts from $-\infty$
Sep
10
revised Proving that a definition of e is unique
Fixed spelling, used LaTex version of lim.
Sep
10
suggested approved edit on Proving that a definition of e is unique
Sep
9
revised Incongruity between summation and proof result
edited body
Sep
9
accepted Incongruity between summation and proof result
Sep
9
comment Incongruity between summation and proof result
This is exactly what I was confused about. And you cleared it up. Thanks!
Sep
9
revised Incongruity between summation and proof result
deleted 3 characters in body