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# Limits of Functions

What happens when a function's output isn't calculable directly – e.g., at infinity – but we still need to understand its behavior? That's where limits come in.

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by **Brilliant Staff**

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What is the value of

\[ \lim_{x \to 3^-} \frac{x^2 - 1}{x-2}? \]

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Find the limit of

\[ \lim_{x \to -1^+} \frac{x^2+x}{ |x+1| }. \]

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What is the value of

\[ \lim_{x \to 3^+} \sqrt{x-3} ? \]

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