2. Determine whether each curve has a linear oblique asymptote. If it does, state its equation. \( \begin{array}{ll}\text { a) } f(x)=2 x^{2}+3+\frac{1}{x} & \text { b) } y=3-x-\frac{1}{x}\end{array} \)
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Beyond the Answer
To determine if a function has a linear oblique asymptote, we look at the leading term's degree in relation to the degree of the denominator in rational functions or observe their behavior at infinity. For function \( a) \): \( f(x) = 2x^2 + 3 + \frac{1}{x} \), as \( x \to \infty \) or \( x \to -\infty \), the \( 2x^2 \) term dominates, and there's no oblique asymptote since the degree (2) is higher than 1. For function \( b) \): \( y = 3 - x - \frac{1}{x} \), as \( x \to \infty \), the \(-\frac{1}{x}\) term approaches 0. Hence, the function behaves like \( y = 3 - x \), which indicates a linear oblique asymptote with the equation \( y = -x + 3 \). In summary, function \( a) \) has no linear oblique asymptote, while function \( b) \) does, with the equation \( y = -x + 3 \).
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