How Do You Normalize a Function to Have a Maximum of 1 and Minimum of 0?

[maxtor101]

Hi all,

Say if I had a function for example p(x) = \beta \cos(\pi x)

And I wanted to alter it such that the max value of p(x) is 1 and its minimum value is 0.

How would I go about doing this?

Thanks for your help in advance!
Max

 

[eumyang]

Hi all,

Say if I had a function for example p(x) = \beta \cos(\pi x)

And I wanted to alter it such that the max value of p(x) is 1 and its minimum value is 0.

How would I go about doing this?

Thanks for your help in advance!
Max

Do you know the minimum and maximum values of p(x) = \beta \cos(\pi x) (before changing p(x))?

 

[maxtor101]

Well yes, the maximum value would be \beta and the minimum value would be - \beta..

 

[dsanz]

Well a very simple way to do it would be to first "shrink" your range from being -β to β, and making it 1. You can do this by dividing by 2β, and you get p'(x) = 0.5 cos(\pix)
Now your function covers -0.5 to 0.5 so what you have to do now is move its range "up" by 0.5... so you get p''(x) = 0.5 (cos(\pix) + 1)