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So the third and final (for now, anyway) problem.

**Problem III**

Approximate the differential equation $$\frac{d^3 u}{dx^3}=g(x)$$ on a model* that has no more than 5 points, and with a constant step $h$ with at least the third local approximation order ($\mathcal O(h^3)$) in this

__differential equation solution set of functions__.

* When I say "model", I mean like a pattern, that is ready to repeat itself throughout the grid, but just taking the one basic vital thing from it that repeats throughout. I think.

And I can only hope to god I translated that well enough, especially the underlined part.

**My Take?**

Honestly, I don't really have a take on this problem. It's just more cosmos for me, one where I don't understand what's really asked of me and why is it only "up to" 5 points. Well mostly the underlined part is the confusing part (which is the original point I guess). Welp, anyway, off I go to sleep.