327 reputation
17
bio website sites.google.com/site/gineer
location Swindon, United Kingdom
age 38
visits member for 1 year, 1 month
seen May 9 at 5:16
stats profile views 60

Technical Architect who loves to program. Just whish I could code something of meaning instead of financial systems for banks and insurance companies.

http://twitter.com/gineer


May
9
accepted Which value of $k$ in $e(k) = 5$ where $E(z)=5z^{-1}+z^{-2}+2z^{-4}$?
May
6
asked Which value of $k$ in $e(k) = 5$ where $E(z)=5z^{-1}+z^{-2}+2z^{-4}$?
Apr
17
comment Proving that $L\{e^{at}\} = \frac{1}{s-a} s>a$
According to bit.ly/111XHei line 2 should simply become $e^{-B(s-a)}$. I still don't get where the denominator comes from or the "-1" in the numerator in line 4?
Apr
16
accepted $L\{\cos{at}\}$: What happens to $i^2$?
Apr
16
asked $L\{\cos{at}\}$: What happens to $i^2$?
Apr
16
asked Proving that $L\{e^{at}\} = \frac{1}{s-a} s>a$
Apr
6
accepted $x_1[n]=0.9\delta[n-5]$ in Matlab (Checkm
Apr
4
asked $x_1[n]=0.9\delta[n-5]$ in Matlab (Checkm
Apr
3
awarded  Yearling
Nov
30
accepted Why does the series $\sum_{n=1}^\infty\frac{(-1)^{n-1}n!}{10^n}$ not converge?
Nov
20
asked Why does the series $\sum_{n=1}^\infty\frac{(-1)^{n-1}n!}{10^n}$ not converge?
Nov
20
accepted Am I correct if I say $\lim_{n\rightarrow\infty}\sum_{k=1}^n\frac{\sqrt{k}}{(k+1)^2}$ converges?
Nov
20
revised Am I correct if I say $\lim_{n\rightarrow\infty}\sum_{k=1}^n\frac{\sqrt{k}}{(k+1)^2}$ converges?
edited body
Nov
20
asked Am I correct if I say $\lim_{n\rightarrow\infty}\sum_{k=1}^n\frac{\sqrt{k}}{(k+1)^2}$ converges?
Nov
20
asked Series with multiple variables
Nov
19
awarded  Cleanup
Nov
19
revised Find the sum of the first $n$ terms of $\sum^n_{k=1}k^3$
rolled back to a previous revision
Nov
19
accepted Find the sum of the first $n$ terms of $\sum^n_{k=1}k^3$
Nov
18
comment Find the sum of the first $n$ terms of $\sum^n_{k=1}k^3$
@Gautam Shenoy: Why would I randomly try to expand $(k+1)^4$? I have an example in my book that I just found doing the same thing for $\sum_{k=1}^nk^2$ where they then expand $(k+1)^3$. Where does this come from?
Nov
18
comment Find the sum of the first $n$ terms of $\sum^n_{k=1}k^3$
@user49521: What is special about n=4?