# Thread: single function of two gaussian distributed variables..

1. ## single function of two gaussian distributed variables..

Hi Folks,

I have a two 2 dimenstional gaussian function of variables x and y and of their respective standard deviations. I have single valued function d(x, y) and I want to know the probability density function of this d(x,y)

Trying to understand how I would proceed to calculate this ?

Cheers,

2. ## Re: single function of two gaussian distributed variables..

What is the function of interest.

3. ## Re: single function of two gaussian distributed variables..

Originally Posted by Dason
What is the function of interest.
A very complicated but differentiable function ! I think there should be a general rule.

thanks

4. ## Re: single function of two gaussian distributed variables..

If you mean with
single valued function d(x, y)
the marginal probability distribution

and with
I want to know the probability density function of this d(x,y)
the joint probility distribution

you have to fit the bivariate normal distribution onto your data.

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