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Ch. 2 - Limits
Briggs - Calculus: Early Transcendentals 3rd Edition
Briggs3rd EditionCalculus: Early TranscendentalsISBN: 9780136847243Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 2.45

Determine the following limits.
lim w→∞ (ln w2) / (ln w3 + 1)

Guida verificata passo dopo passo
1
Identify the limit expression: \( \lim_{w \to \infty} \frac{\ln w^2}{\ln w^3 + 1} \).
Simplify the expression: \( \ln w^2 = 2 \ln w \) and \( \ln w^3 = 3 \ln w \).
Rewrite the limit using the simplified expressions: \( \lim_{w \to \infty} \frac{2 \ln w}{3 \ln w + 1} \).
Factor out \( \ln w \) from the denominator: \( \lim_{w \to \infty} \frac{2 \ln w}{\ln w (3 + \frac{1}{\ln w})} \).
Cancel \( \ln w \) and evaluate the limit: \( \lim_{w \to \infty} \frac{2}{3 + \frac{1}{\ln w}} \).

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Limits

Limits are fundamental concepts in calculus that describe the behavior of a function as its input approaches a certain value. In this case, we are interested in the limit of a function as w approaches infinity. Understanding limits helps in analyzing the asymptotic behavior of functions and is crucial for evaluating expressions that may not be directly computable.
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One-Sided Limits

Natural Logarithm

The natural logarithm, denoted as ln, is the logarithm to the base e, where e is approximately 2.71828. It is a key function in calculus, particularly in growth and decay problems. In the given limit, the natural logarithm of w raised to a power is involved, which simplifies to a multiplication of the exponent and ln(w), illustrating the properties of logarithms.
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Derivative of the Natural Logarithmic Function

L'Hôpital's Rule

L'Hôpital's Rule is a method used to evaluate limits that result in indeterminate forms, such as 0/0 or ∞/∞. It states that if the limit of f(x)/g(x) leads to an indeterminate form, the limit can be found by taking the derivative of the numerator and the derivative of the denominator. This rule is particularly useful in the context of the given limit, as it can simplify the evaluation of the logarithmic expressions.
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Power Rules
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Sketch a possible graph of a function f that satisfies all of the given conditions. Be sure to identify all vertical and horizontal asymptotes.

f(−1)=−2f\(\left\)(-1\(\right\))=-2, f(1)=2f\(\left\)(1\(\right\))=2, f(0)=0f\(\left\)(0\(\right\))=0, limx→∞f(x)=1{\(\displaystyle\[\lim\)_{x\(\to\]\infty\)}{f(x)=1}}, limx→−∞f(x)=−1{\(\displaystyle\)\(\lim\)_{x\(\to\)-\(\infty\)}{f(x)=-1}}

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lim x→5 ln 6(√x^2−16−3) / 5x−25

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f(x)=x−2ln∣x−2∣f\(\left\)(x\(\right\))=\(\frac{x-2}{\ln\left|x-2\right|}\); a=2a=2

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Determine limx→∞f(x)\(\lim\)_{x\(\rightarrow\)\(\infty\)}f\(\left\)(x\(\right\)) and limx→−∞f(x)\(\lim\)_{x\(\rightarrow\)-\(\infty\)}f\(\left\)(x\(\right\)) for the following functions. Then give the horizontal asymptotes of ff (if any).


f(x)=4x3+12x3+16x6+1f\(\left\)(x\(\right\))=\(\frac{4x^3+1}{2x^3+\sqrt{16x^6+1}\)}

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