What was your son's mathematical problem?

I don't think designing aero engines features in year 9

Quote from: Frenchie on September 15, 2009, 10:10:47 pmWhat was your son's mathematical problem?"write down an nth term formula for the original sequence12 26 46 72 104 142"

3n^2 - 7n + 6 ...?

Quote from: andyoxon on September 15, 2009, 10:27:55 pm3n^2 - 7n + 6 ...?nope

12 + 11n + 3n^{2}I think

Quote from: Malcolm Volio on September 15, 2009, 10:32:39 pm12 + 11n + 3n^{2}I thinkNot that either, but it's close. Should there be a minus sign?*too late at night*

How is this quadratic function or polynomials math?[Edit: Beaten by Clarion]

Quote from: Frenchie on September 15, 2009, 10:36:00 pmHow is this quadratic function or polynomials math?[Edit: Beaten by Clarion]Cos a quadratic is just an eqn with x^{2} in, innit

Doesn't seem to work.

Quote from: Frenchie on September 15, 2009, 10:36:00 pm Doesn't seem to work.It does.It's the equation of a quadratic curve, and if you insert the discrete points n = 0, 1, 2 etc you get the series that Martin gave us.

the problem I have with all this is that it it just maths for maths sake; nobody is ever ever going to need this apart from maths teachers