A program where I can draw a function and calculate the integral?

  • #1

Main Question or Discussion Point

I borrowed a high-quality oscilloscope from Tektronix and when we did our measurements, I basically printscreened each new signal. If I had realized I could export the waveforms, I would have, but I didn't.

Basically, I know what the function looks like, but I need to find its integral. Aside from dividing the function by rectangles and triangles, is there a program who can take a picture a easily find the integral?

Thanks
 

Answers and Replies

  • #2
SteamKing
Staff Emeritus
Science Advisor
Homework Helper
12,796
1,667
Integrating by triangles and rectangles is cute, but things have advanced somewhat. If you are capable of picking points off of your waveform at equal intervals, you can use Simpson's first rule to figure out the area under the curve: http://www.mathwords.com/s/simpsons_rule.htm

There are several other procedures for numerical information.
 
  • #3
Integrating by triangles and rectangles is cute, but things have advanced somewhat. If you are capable of picking points off of your waveform at equal intervals, you can use Simpson's first rule to figure out the area under the curve: http://www.mathwords.com/s/simpsons_rule.htm

There are several other procedures for numerical information.
I actually found a way to do it with Matlab. Thank you, though!
 

Related Threads on A program where I can draw a function and calculate the integral?

  • Last Post
Replies
2
Views
2K
Replies
2
Views
5K
Replies
17
Views
16K
Replies
0
Views
2K
Replies
1
Views
3K
Replies
1
Views
6K
Replies
2
Views
3K
Replies
7
Views
5K
Replies
3
Views
9K
Replies
2
Views
1K
Top