I don't think you can do it nicely in the complex mode on desmos as far as I know.
You can do something like this though to cobble it together
Jamie Wood
@jamiewoodmaths.bsky.social
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Maths teacher for 8 years, I now make maths revision resources for a website. I mostly taught A level Maths & Further Maths in a sixth form, but I now produce content for all sorts of maths courses and levels.
