Limit Calculator: Wolfram|Alpha
https://www.wolframalpha.com/calculators/limit-calculatorIn addition to the formal definition, there are other methods that aid in the computation of limits. For example, algebraic simplification can be used to eliminate rational singularities that appear in both the numerator and denominator, and l'Hôpital's rule is used when encountering indeterminate limits, which appear in the form of an irreducible or .