Question: 1. Let f : R R be a function and let R. Prove that lim f(z) exists if and only if for every > 0,

1. Let f : R R be a function and let

1. Let f : R R be a function and let R. Prove that lim f(z) exists if and only if for every > 0, there Trc exists a 0 > 0 such that |f(z) - flw)l

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