how do i find lim x→0 (sin x - tan x)/x³ without using l'hopitals rule?(adsbygoogle = window.adsbygoogle || []).push({});

also, can someone explain this to me, because I don't understand it.

given that lim x→c f(x)=L >0. Prove that there exists an open interval (a,b) containing c such that f(x) > 0 for all x ≠ c in (a,b).

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# Homework Help: Limits without L'Hopitals rule

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