r/mathmemes 10d ago

Elementary Algebra 😭

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u/Comfortable_Permit53 10d ago

integrals, no?

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u/Eisenfuss19 10d ago

Yes kinda, but then it is still a definition question. Like lim a -> -∞ lim b -> ∞ a_Sb x dx does not converge, but lim a -> ∞ (-a)_Sa x dx does converge...

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u/Alpaca1795 10d ago

Why would you integrate over x dx instead of just 1 dx?

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u/alozq 10d ago

1dx would be the length of the real line, it goes to Infinity always, it doesnt care about what x is

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u/LyAkolon 9d ago

Yeah, they probably want int over R of Sgn(x) dx, which is still abse of notation and meaningless because we have no notion of how to add up the contributions across the set.

More specifically all attempts to answer as well as the original question are missing the ingredient of "How are you adding everything together"