Domanda del libro di testo
Evaluate the integrals in Exercises 31–78.
47. ∫(1/r)csc²(1+ln(r))dr
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Ch. 7 - Transcendental Functions
Hass15th EditionThomas' CalculusISBN: 9780137616077
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TOC.tableOfContents
- Ch. 1 - Functions155
- Ch. 2 - Limits and Continuity240
- Ch. 3 - Derivatives337
- Ch. 4 - Applications of Derivatives293
- Ch. 5 - Integrals41
- Ch. 6 - Applications of Definite Integrals25
- Ch. 7 - Transcendental Functions490
- Ch. 8 - Techniques of Integration399
- Ch. 9 - First-Order Differential Equations66
- Ch. 10 - Infinite Sequences and Series132
- Ch. 11 - Parametric Equations and Polar Coordinates58
Capitolo 7, Problema 7.P.118
118. A particle is traveling upward and to the right along the curve y=ln(x). Its x-coordinate is increasing at the rate (dx/dt)=√x m/sec. At what rate is the y-coordinate changing at the point (e², 2)?
Guida verificata passo dopo passo1
Identify the given information: The particle moves along the curve \(y = \ln(x)\), and the rate of change of the x-coordinate with respect to time is given by \(\frac{dx}{dt} = \sqrt{x}\) meters per second.
Recall that the rate of change of the y-coordinate with respect to time, \(\frac{dy}{dt}\), can be found using the chain rule: \(\frac{dy}{dt} = \frac{dy}{dx} \cdot \frac{dx}{dt}\).
Calculate \(\frac{dy}{dx}\) by differentiating \(y = \ln(x)\) with respect to \(x\): \(\frac{dy}{dx} = \frac{1}{x}\).
Evaluate \(\frac{dy}{dx}\) and \(\frac{dx}{dt}\) at the point \((e^{2}, 2)\): Substitute \(x = e^{2}\) into both expressions to find their values at that point.
Multiply the values found in the previous step to get \(\frac{dy}{dt}\) at the point \((e^{2}, 2)\): \(\frac{dy}{dt} = \frac{1}{e^{2}} \times \sqrt{e^{2}}\).
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Related Rates
Related rates problems involve finding the rate at which one quantity changes by relating it to the rate of change of another quantity through their functional relationship. Here, the rates of change of x and y with respect to time are connected via the curve equation.
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Percorso guidato
04:16
Intro To Related Rates
Chain Rule in Differentiation
The chain rule allows differentiation of composite functions. Since y = ln(x) depends on x, which in turn depends on time t, dy/dt is found by multiplying dy/dx by dx/dt, linking the rates of change through the chain rule.
Video consigliato:
05:02Intro to the Chain Rule
Properties of the Natural Logarithm Function
The natural logarithm function y = ln(x) has a derivative dy/dx = 1/x. This derivative is essential to find how y changes with respect to x, which is then used to determine the rate of change of y with respect to time.
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Percorso guidato
06:21Properties of Functions
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