looking for free software to draw sin(A*x) graph

[Rick York]

You could write your own. I use this library a lot and it works really well and it is very easy to use : High-speed Charting Control[^].

"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"

[Mike Hankey]

Something like this? Graphing Calculator 3D - Official app in the Microsoft Store[^]

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[obermd]

Excel or Libre Office Calc can do this.

[Amarnath S]

Python Matplotlib [Matplotlib — Visualization with Python](https://matplotlib.org/) [^] can do it for free. By the way, am curious to know the name of the math book you're reading. I have a small program (in JavaScript) to test our knowledge of Sines/Sinusoids - [SineDrill](https://amarnaths0005.github.io/SineDrill/) [^]

[Jeremy Falcon]

[gnuplot](http://www.gnuplot.info/) It's free and way, way more feature rich than Excel or Calc. It has a steep learning curve with its built in command/scripting language but much easier than dealing with a library. Also, there are plenty of examples on their site to help you get started. It also has a ton of export formats, etc. I recently used it to analyze some data myself. You can check out the [demos](https://gnuplot.sourceforge.net/demo\_6.1/) to get an idea of what it can do and there are some YouTube tutorial [vidoes](https://www.youtube.com/watch?v=9QUtcfyBFhE) to help get you started. Also, the video link covers plotting sine waves.

Jeremy Falcon

[Nisha Marshall]

Hello

I wholeheartedly agree!

Regards Nisha Marshall Prestige Camden Gardens

[Bassam Abdul Baki]

I've used several of these on and off. [Graphing Calculator 3D - Official app in the Microsoft Store](https://apps.microsoft.com/detail/9nblggh557rp?hl=en-US&gl=US) [GNU Octave](https://octave.org/) [Maxima, a Computer Algebra System](https://maxima.sourceforge.io/) [Graph | Plotting of mathematical functions](https://www.padowan.dk/)

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[Southmountain]

thanks for this info:rose:

diligent hands rule....

[Southmountain]

:rose:

diligent hands rule....

[RainHat]

One web site that seems to do something like that: plot sin(x y) - Wolfram|Alpha[^] And one that does not (quite manage it), but is interesting. mathsisfun.com (Equation Grapher)[^]

[Jan Kucera]

The built-in Calculator app in any recent version of Windows can plot these. Then there is [Microsoft Mathematics](https://archive.org/details/msmath4)...

[radius200]

Desmos | Graphing Calculator[^] does it on a webpage and is amazingly easy to use

[Andrew Codd]

Look up Desmos

[Wafeman]

Here's a third vote for Desmos. My wife uses it almost every day in her quest to learn calculus. It also has compute functionality separate from graphing.