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revil
11-24-2002, 09:02 AM
I can't find my math books which has this kind of info in it.

I need to make an equation from a set of fixed points on the x,y axis.

anyone remember how to do that?

irwin
11-24-2002, 09:10 AM
Originally posted by revil
I can't find my math books which has this kind of info in it.

I need to make an equation from a set of fixed points on the x,y axis.

anyone remember how to do that?

y=mx+b ? :P

hmm...i should go to sleep...it's past 6! :o

molecularfire
11-24-2002, 05:38 PM
Y=mX+B. If you have two sets of numbers, take one set and plug it in for Y and X. You can figure out what the slope m is from the two sets (graph it). Then, all you have to do is calculate B by plugging in Y,S, and m. Once you have B, then write the equation with m and b as numbers and leave Y and X as variables.

Ex: for sets (1,1) and (2,2)
slope =y2-y1 = 1
..........x2-x1

Then, 1=1(1)+B therefore B=0

Equation is Y=1X+0

Hope this helps. If not, tell me what info. they gave you. :)

Kim
11-24-2002, 05:54 PM
Now those are two words that should never be used together! ;)

sho.gun
11-24-2002, 06:11 PM
taylor polynomials?

:(

revil
11-24-2002, 06:15 PM
:disa:

you guys don't seem to understand. I need an equation from a set of random points. they are definitly not a curve. (if it was, i'd do some curve fitting :()

the amount of point are finite (about 10).

molecularfire
11-24-2002, 06:18 PM
Beats me. If it's above algebra, my math blows. Sorry. :)

hapoo
11-24-2002, 06:36 PM
I have had as much math as anyone would ever want to take but i'm not sure i understand your question. If this was a printed problem could you type it up?
Do you just have a set of points and want to find a "best fit" line? If so you could use taylor polynomials as sho said. Or if its a repeating pattern you could use fourier series.