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Limits & Continuityhard
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Use the ϵ\epsilonϵ-δ\deltaδ definition to prove lim⁡x→2x2=4\lim_{x \to 2} x^2 = 4limx→2​x2=4. If we restrict ∣x−2∣<1|x-2|<1∣x−2∣<1, what bound does this give on ∣x+2∣|x+2|∣x+2∣?