Connecting points to make a curve

Sadia Haque shared this question 5 years ago

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Hi. I have been trying to make a graph of a airfoil for a project work. I initially inserted all the points accordingly now I have to make a line pass through the points. I tried 'fit' but it doesn't work and I don't know why. So can you please help me? I don't know whats the wrong here.

Files: Screen Shot 201...

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Comments (6)

ccambre ● 5 years ago

such a wave form makes me think that the command FitSin[<LIst of Points>] is appropriate, one for the upper part and one for the lowerpart. I made a small example and didn't copy exactly all the points of the screenview.

Once you get the expression for f(x) you can limit the domain with the command Function[ f, <Start x-Value>, <End x-Value> ]

chris

4f56de6b937f1626671536778ce06cfa

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Sadia Haque ● 5 years ago

Hi. Thank you very much for the reply. I tried the way you have asked me to do. The first line at the top worked however, the bottom one is not working. So, can you let me know how to do it?

Thank you.

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ccambre ● 5 years ago

please add the file

chris

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Sadia Haque ● 5 years ago

Hi here is the screenshot. As you can see the line below the x-axis did not work.

Files: Screen Shot 201...

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mathmagic ● 5 years ago

sin() has a simetry that your points does not have

I think better you can use Spline[] or see this topic

https://help.geogebra.org/t...

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Sadia Haque ● 5 years ago

Hi. Thanks for your reply. I figured out about it through some methods.

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