Finding a function to best fit a curve

  • Mathematica
  • Thread starter kelly0303
  • Start date
  • #1
kelly0303
481
28
Hello! I want to fit a function to the curve I attached (the first image shows the full curve, while the second one is a zoom-in in the final region). Please ignore the vertical lines, what I care about is the main, central curve. It basically goes down slowly and then it has a fast rise. What is the best function that I can try to use to fit this kind of curve? Thank you!
 

Attachments

  • Screen Shot 2019-11-29 at 04.06.25.png
    Screen Shot 2019-11-29 at 04.06.25.png
    16.9 KB · Views: 207
  • Screen Shot 2019-11-29 at 03.59.27.png
    Screen Shot 2019-11-29 at 03.59.27.png
    15.3 KB · Views: 200

Answers and Replies

  • #2
BvU
Science Advisor
Homework Helper
15,268
4,244
What is it ?

Looks like an upside down resonance curve like

1575024971485.png
(from here)

Also: googling 'low-pass filter resonance curve' yields this nice video.

Perhaps you can try a log scale for the ordinate ?
 

Suggested for: Finding a function to best fit a curve

  • Last Post
Replies
1
Views
527
Replies
0
Views
1K
Replies
4
Views
415
Replies
4
Views
572
Replies
12
Views
4K
  • Last Post
Replies
2
Views
666
Replies
5
Views
855
Replies
0
Views
353
  • Last Post
Replies
8
Views
2K
  • Last Post
Replies
14
Views
2K
Top