Sorry if this question is not adaquete for this subreddit; r/Desmos is dead, so r/math is the first alternative.

Desmos is a free graphing program. It accepts most functions in the form of f(x)=x. It can also calculate derivatives, which is really awesome if you are a math teacher trying to explain why a derivative relates to the slope of a function at a point.

Now to address my question: how can I find a limit in Desmos? If I have the function f(x)=sin(x)/x , the limit is clearly 1. Desmos does actually seem to sort of indicate this; it uses an open point instead of a closed point at x=0 for this function. Despite this, I can't define that anywhere else. There is no "limit" notation in Desmos. If there was, SO much more could be done, mainly anti-derivative stuff.

Is there a way to do it? I have a neat little graph set up to find the arc length of a given function between two points. I can't finish the parameters of the graph, however, because doing so would require finding the limit of a summation. Summations, by the way, are available in Desmos. So what gives? Why is there no limit notation? I understand there not being integral notation, since that is many orders of magnitude more complex in terms of programming than derivatives, but a limit should be simple. Is there some kind of way to define a limit?

By the way, I apologize if this post is too wordy or seems full of non-sequiturs. It's quite late.

Oh! And if anyone knows a way to contact the desmos team, that would help a lot. I would like to speak to them about this and see if they are working on implementing this (if it is possible), or if they are too busy to do so.