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# maths ks4 coursework..... watch

1. 1) investigate the relationship between the stair total and the position of the stair shape or the grid.
2) investigate further the relstioship between the stair totals and the step stair on other number grids.

hey ppl...im pretty sure most of u guys wud hav done dis coursework... plz do help me out, wiv findin da formula... if cn jus tell me da actual formula itself .....LOLZZZZZ newyz i need it a.s.a.p....any help wud b appreciated,.
fnx....
2. nah, do it yourself.
3. (Original post by easby)
1) investigate the relationship between the stair total and the position of the stair shape or the grid.
2) investigate further the relstioship between the stair totals and the step stair on other number grids.

hey ppl...im pretty sure most of u guys wud hav done dis coursework... plz do help me out, wiv findin da formula... if cn jus tell me da actual formula itself .....LOLZZZZZ newyz i need it a.s.a.p....any help wud b appreciated,.
fnx....
I would consider helping, if I knew what the hell you were going on about!
4. You can use the following formula to work out the formulae for any stair step-size with any grid size.

T = S(S+1){3N + (G + 1)(S - 1)}
==========================

where,
S = Step size
G = grid size
N = the number in the starting cell.

You can test this out by trying Grid size = 10 and Stair size = 3, for example.

Putting G = 10, and S = 3,

T = .3(4){3N + 11*2}
T = 2{3N + 22}
T = 6N + 44
=========

You can work out Stair totals formulae that will help you with parts 1) and 2) that you mentioned.

If you want/need the derivation of that formula, please post back.

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Updated: July 6, 2005
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