Math Is Fun Forum

kappa_am

Member

Registered: 2013-12-20

Posts: 63

S-shaped function

Hi fellas,
I need an S-shaped function whose starting point (t), steepness, starting value(y1), and end value (y2) can be adjustable.
I would be grateful if you provide me with a numerical solution or a formula.

Thanks

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: S-shaped function

Hi;

Please define the terms S shaped function a sine curve maybe? Steepness?

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

kappa_am

Member

Registered: 2013-12-20

Posts: 63

Re: S-shaped function

Hi Bobbym,
Something like this picture.
http://i60.tinypic.com/2ykbz2v.png
I'd like to have a numerical formula by which I can define a desirable S_shaped curve (desired minimum, maximum, slope).

Thank you

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: S-shaped function

Looks to me like half of a bell shape curve like the one used in statistics.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.