sorry i couldnt attend my car needs an MOT test and ive been spending too much money just to get it through that and the train would have cost £153 and as much as i enjoy cubing i aint spending that on a train, ever.

Why not? Its our language you ruined it.
On Topic, im from loughborough (inbetween leicester and nottingham for the geographicaly challenged) and theres a couple of us that speed cube here that might be interested. Ive broken my hand again and cant cube atm but i want to go to a competition of...

No one attempted my 'challenge'
\int_{-\infty}^{\infty} \! \frac{x\sin x}{x^2+a^2} \, \mathrm{d} x, a > 0
p.s. i dont think it can be calculated by standard calculus, if that makes it more appealing to prove me wrong.

He doesnt need to justify everything if its obvious. If people had to justify things that had already been proven, then proofs would be so much longer.
{\text{Need to show that }}\sum\limits_{i = 1}^n i = \frac{{n(n + 1)}}{2}.
{\text{Let }}n{\text{ be some small value, say 5}}{\text{.}}...

ben1996123: For the purpose of Gaussian elimination (which is what i did) they're just tables of coefficients. see the 4 equations above the first matrix, thats the set of equations im trying to solve, i had 4 unknowns in my cubic equation so i needed 4 equations to solve them. So column 1...

3.14159265358979323846264.... i remembered 60 decimal places 4 and a half years ago thats all i can remember now since it was absolutely pointless i also remember the contined fraction expansion for it as [3;7,15,1,292,1,1,1,2,1,3,1,...]

I found that program a few days ago, its very good for me because i can set it to copy to latex code so i can type my equations in MathType then paste them over, which is a lot easier as the latex code for the question you posted previoisly would be \[{x^{\sinh (x + y)}} = \frac{{{2^{\ln...

Pretty good example ben its all simple calculus just lots and lots of it. Will post a solution tomorrow, its 2:54 am atm and ive got lectures tomorrow morning, been teaching some friends how to cube :)
Also someone can try \int_{-\infty}^{\infty} \! \frac{x\sin x}{x^2+a^2} \, \mathrm{d} x, a >...