Limits & Continuity · Definitions

Right-Hand Limit

limxa+f(x)=L\lim_{x \to a^+} f(x) = L

The limit of f(x) as x approaches a from the right (from values greater than a). A two-sided limit exists if and only if both one-sided limits exist and are equal.

Conditions. f(x) must be defined on an open interval (a, d) for some d > a.
  • 0 variables
  • 2 worked examples
  • 18 in Limits & Continuity

Worked examples

Find lim(x→0⁺) |x|/x.
  1. For x > 0, |x| = x
  2. So |x|/x = x/x = 1

Answer: lim(x→0⁺) |x|/x = 1

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Find lim(x→0⁺) √x.

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Practice

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