Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2005-08-01 23:43:57

kylekatarn
Member
Registered: 2005-07-24
Posts: 445

.

.

Last edited by kylekatarn (2020-02-16 01:42:03)

Offline

#2 2005-08-02 00:29:03

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,710

Re: .

I think I could fit a polynomial to that, as there are no duplicate x-values. But the polynomial is likely to swing around a lot and also move wildly past the end points.

B-splines can do a neater job, but are not a single "function" as such, they are more like polynomial-segments (I can't remember the details, though)


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

Offline

#3 2005-08-02 00:58:12

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: .

Excel says that y=-0.1481x^4+0.6293x³+4.4564x²-12.367x-8^-10, presumably to 5 significant figures each. This is a quartic function, and even though the highest required point is 8, its highest point is almost 50, so as MathsIsFun says, there is probably a better way, involving trigonometry or something.


Why did the vector cross the road?
It wanted to be normal.

Offline

#4 2005-08-02 02:38:41

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: .

You can post pictures here as long as they are viewable somewhere else on the net.

[img]link to picture[/img]

If you want to upload images from your computer, I think you need to upload them onto another site first and then link to it.


Why did the vector cross the road?
It wanted to be normal.

Offline

Board footer

Powered by FluxBB