1. **State the problem:** We are given the function $$f(x) = \log_{4} \left( x^{2} - 1 \right)$$ and want to understand its properties and graph shape.
2. **Domain determination:** The logarithm function is defined only for positive arguments. So, we require:
$$x^{2} - 1 > 0$$
This inequality can be rewritten as:
$$x^{2} > 1$$
which means:
$$x < -1 \quad \text{or} \quad x > 1$$
3. **Behavior near domain boundaries:** At $$x = \pm 1$$, the argument of the logarithm is zero, so the function has vertical asymptotes there.
4. **Shape of the graph:** Since $$x^{2} - 1$$ grows large as $$|x|$$ increases, the logarithm will increase slowly for large $$|x|$$.
5. **Summary:** The function has two branches:
- For $$x < -1$$, $$f(x)$$ is defined and decreases towards $$-\infty$$ as $$x \to -1^{-}$$ and increases slowly as $$x \to -\infty$$.
- For $$x > 1$$, $$f(x)$$ is defined and increases slowly as $$x \to \infty$$ and decreases towards $$-\infty$$ as $$x \to 1^{+}$$.
This matches the described graph with vertical asymptotes at $$x = \pm 1$$ and two branches on either side.
Final answer: The domain is $$(-\infty, -1) \cup (1, \infty)$$ and the graph has vertical asymptotes at $$x = -1$$ and $$x = 1$$ with the described logarithmic shape on each branch.
Log Quadratic
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