PROOF 133
Prove.
The definition of continuity comes from the definition of a limit
On the real numbers ℝ.
Definition D1
lim(x→c) f(x) = L means the following. For every ε > 0 there exists δ > 0 such that |f(x) − L| < ε for every x with 0 < |x − c| < δ.
Proof.
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