George Mcdonald
08/29/2024 · Junior High School
Consider the function \( f(x)=\frac{2 x^{4}+4 x^{3}-16 x^{2}}{x^{4}-20 x^{2}+64} \) a. Evaluate \( \lim _{x \rightarrow \infty} f(x) \) and \( \lim _{x \rightarrow-\infty} f(x) \), and then identify the horizontal asymptotes. b. Find the vertical asymptotes. For each asymptote \( x=a \), evaluate \( \lim _{x \rightarrow a^{-}} f(x) \) and \( \lim _{x \rightarrow a^{+}} f(x) \).
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The horizontal asymptote is \( y = 2 \). The vertical asymptotes are at \( x = -4, -2, 2, 4 \), with \( f(x) \) approaching \( -\infty \) as \( x \) approaches each asymptote from the left, and \( +\infty \) as \( x \) approaches each asymptote from the right.
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