Finding two variables function

[jonass88]

Hello

I would like to ask if is possible to find a function with two variables z(y,x) on Mathcad based on the data I have. It would be nice to find this function and with it to plot the surface.

Thank you and good weekend

Jonas

[LucMeekes]

There is an infinite number of functions z(x,y) that pass exactly through the points you provide, two of them being:

z1(x,y)=1*y+0*x

z2(x,y)=0*x+1*y

Which one would you think Mathcad should find for you?

Success!

Luc

[jonass88]

Hey Luc

Thanks for your answer, the numbers in that table are only representatives, in the data I have x,y and z have a different behavior.

[LucMeekes]

I guess you are looking for an approximation.

You should also read this thread https://community.ptc.com/t5/PTC-Mathcad-Questions/Defining-a-Curve/td-p/483027

Success!
Luc

[ValeryOchkov · Accepted solution]

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@jonass88 wrote:

Hello

I would like to ask if is possible to find a function with two variables z(y,x) on Mathcad based on the data I have. It would be nice to find this function and with it to plot the surface.

Thank you and good weekend

Jonas

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May be this is any help to you

http://twt.mpei.ac.ru/ochkov/car/c_e.html

[jonass88]

Hello Valery

It seems that is exactly what I am looking for. I will check as soon as I use the computer.

Thanks a lot!!

[ValeryOchkov]

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@jonass88 wrote:
Hello Valery

It seems that is exactly what I am looking for. I will check as soon as I use the computer.

Thanks a lot!!

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I am glad to help you.

If you edit my english text - I will be glad more!

Sorry Ai nou inglish veri plpkho!