adjusting a normal sin function to fit as a model

[tunptl]

I am actually a student, and I am having serious trouble adjusting y= sinx to fit with a set of data that I have inputted. My task is to find a function that best models the set of data, and to do that I need to adjust y = sinx so its as "close" as possible to my set of data...I also need to do this with a quartic function and an exponential (rise) function

[Simon]

Hi tunptl,

To adjust a function to fit a set of data you need to have parameters in your equation:

y = asin(bx + c) + d

Then open the Constant Controller to adjust the equation.  Finally, when you select the dataset and the equation you can right-click and choose Best Fit to data. Then Autograph will adjust the parameters to fit.

Hope this helps.

Simon