Arrow notation is a way to describe the behavior of functions as the input approaches a particular value or infinity. It is often used to express limits and asymptotic behavior.
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Arrow notation, such as $x \rightarrow \infty$, indicates that $x$ approaches infinity.
It can be used to describe horizontal asymptotes, e.g., $f(x) \rightarrow L$ as $x \rightarrow \infty$ means the function approaches $L$ as $x$ goes to infinity.
Vertical asymptotes can be described using arrow notation by indicating that $f(x)$ approaches infinity or negative infinity as $x$ approaches a specific value.
Arrow notation helps in understanding end behavior of polynomial and rational functions.
It is essential for expressing limits in calculus, but its understanding starts in algebra when studying rational functions.