I do hope you can answer this question. I know only two sitesbut on one: Wolfram the scale are distorted and on the other: Online integral calculator you can plot only onr curve.
Can you suggest some free sites where you can plot more curves in a neat way?
Please give a link to a site where it is possible to save the images with name in one's paint.net or other app
https://www.desmos.com/calculator/ycjg6qb7s5 here is site which plots curves.