Solving Easy Limits
How to Transform Limit Expressions That Preclude Using L'Hôpital's Rule
Know the Limitations of Using a Calculator to Find Limits

How to Make Unacceptable Forms Acceptable before Using L'Hôpital’s Rule

You can use L'Hôpital’s rule to find a limit when other methods don’t work. In fact, even if some other method does work, L'Hôpital’s rule is often a good shortcut. If substitution of the limit number into the limit expression produces one of the unacceptable forms, ±∞ · 0 or ∞ – ∞, you first have to tweak the problem to get one of the acceptable forms:

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Finis.

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Evaluating Limits in Calculus
How to Determine Whether a Function Is Discontinuous
How Limits Work with Functions
How to Solve Limits at Infinity with a Calculator
How to Change Unacceptable Forms before Using L'Hôpital’s Rule
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