Creating a periodic function using XY data set?
I've entered x and y values for a periodic function into a XY data set and now have all of the points plotted. I now need to add a curved line like what you would see in a periodic function but don't know how. I've tried to use the join points option when making the data set but it just makes a straight line between each of the points, I need a curved line instead.
Marc Dancer commented
In the event that you haven't found a solution yet, here is my suggestion.
Create a function y=a cos (b (x-c))+d
Select both the data set and the function, right-click and choose "Best Fit to Data"
Creating a text box for the function will reveal the parameters.