# Thread: Formula of a decreasing upward curve

1. ## Formula of a decreasing upward curve

Hi!

To graph a hypothetical stock price where the price is increasing but at a decreasing rate of change, I beed the general formula for the graph below:

Thank you!

Doctor TR

2. ## Re: Formula of a decreasing upward curve

Originally Posted by DoctorTR
To graph a hypothetical stock price where the price is increasing but at a decreasing rate of change, I beed the general formula for the graph below:
Do you have a question? If so, please explain.

3. ## Re: Formula of a decreasing upward curve

Originally Posted by Plato
Do you have a question? If so, please explain.
Dear Plato,

My question is "What is the general formula?"

For example, for a graph where the price is increasing at an increasing rate, the formula is: f(x) = x^n, where n is a value such as 1.5.

Doctor TR

4. ## Re: Formula of a decreasing upward curve

Originally Posted by DoctorTR
My question is "What is the general formula?" For example, for a graph where the price is increasing at an increasing rate, the formula is: f(x) = x^n, where n is a value such as 1.5.
It seems that you want functions that are increasing concave down.
There are many, many,
Look at arctan(x).

Look at $\sqrt{x}$

5. ## Re: Formula of a decreasing upward curve

Originally Posted by Plato
It seems that you want functions that are increasing concave down.
There are many, many, ...
Dear Plato,