Hi, I am having a hard time trying to prove this. If, lim f(x) = L and f(x)>0, then L>=0. x->a (I am supposed to prove it by contradiction)
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Originally Posted by akolman Hi, I am having a hard time trying to prove this. If, lim f(x) = L and f(x)>0, then L>=0. x->a (I am supposed to prove it by contradiction) If then there exists so that . This means there exists so that for all we have and so on .
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