Is there a way to make the function

f(w,t)=sin(wt)/w

defined at w = 0?

I want to achieve better numerical stability, and make it continuous everywhere.

Observation: Using limw->0 f(w,t)

I know that at w = 0:

f(0,t) = t

Is it possible to improve this function? I would be really glad to know and why, how. Thank you in advance!

I really do not want to code in smth like: if w < 0.001 { x = t; }

Background notes: My equation also has constant v coefficient, but I removed it for simplicity. f(w,t)=v*sin(wt)/w

If I derived this correctly this should be x component of a motion of a car that rotates with rate w. It goes with const speed and const steer.

These are consts: v - speed, l - base length(dist from rear to front shaft), a - steering angle.

w(a) is defined idk if correctly. w(a) = (vsin(2a))/(2*l) I just logically added proportions, projections, imagining a rear wheel powered car. Put some values I am somewhat confident in, such as: w(0) = 0 w(π/2) = 0

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[–] 1 point 1 month ago (2 children)

this seems like a standard problem. did you discuss it with your colleagues? alternatively, did you already ask chatgpt? where are you struggling?

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  • [–] [S] 3 points 1 month ago (1 child)

    Hello. I am a school student making an open source robot car.

    I did not ask my teammate, will do.

    Btw there is our repository: (Currently there is no proper README.md, docs). https://github.com/XLNC-APEX/WRO_FE_2026_NATIONAL

    You can see images and some steering, radius related experiment at my mastodon post. https://mas.to/@soupborsh/117011244080971088

    I prefer to not interact with AI, that is why I am writing here to humans.

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  • [–] -5 points 1 month ago (2 children)

    yeah and i prefer not to interact with people who seek help who apparently didn't put any work into trying to solve the problem themselves first

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  • [–] 1 point 1 month ago

    If you don't like answering questions, then simply don't, and if you just like shitting on students asking questions then please just shut the fuck up and grow up.

    We all start somewhere and asking people for help is absolutely NOT the massive moral and studying failure you're making it out to be.

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  • [–] 1 point 1 month ago* (last edited 1 month ago)

    If you'd put anywhere near as much thought and effort into the mathematics as you did into gatekeeping learning, you'd see that there's a genuine issue approaching zero from different directions in this function RxR->R and it's not obvious what to do about that.

    This is not stackoverflow. Stackoverflow was dying before LLMs, and it's this kind of critical and/or hostilenon-answering response to beginners' questions that killed it.

    You can't be bothered to think about or answer the question, and somehow you've concluded that the student who has actually done some work on the project is the lazy one who needs to be belittled.

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