Skip to main content
Ch. 6 - Applications of Integration
Briggs - Calculus: Early Transcendentals 3rd Edition
Briggs3rd EditionCalculus: Early TranscendentalsISBN: 9780136847243Non è quello che usi tu?Cambia libro di testo
Capitolo 6, Problema 6.R.15

14–25. {Use of Tech} Areas of regions Determine the area of the given region.
Graph showing the area between the curves y = sin 2x - 1 (black) and y = -cos 2x (red) with shaded region.

Guida verificata passo dopo passo
1
Identify the curves given: the upper curve is \(y = \sin 2x - 1\) and the lower curve is \(y = -\cos 2x\) over the interval where they intersect.
Find the points of intersection by setting \(\sin 2x - 1 = -\cos 2x\) and solving for \(x\). This will give the limits of integration.
Set up the integral for the area of the shaded region as the integral of the difference between the upper and lower curves: \(\int_{a}^{b} \left[(\sin 2x - 1) - (-\cos 2x)\right] \, dx\) where \(a\) and \(b\) are the intersection points.
Simplify the integrand to \(\int_{a}^{b} (\sin 2x - 1 + \cos 2x) \, dx\) to prepare for integration.
Integrate the function term-by-term with respect to \(x\), then evaluate the definite integral using the limits \(a\) and \(b\) to find the area.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
4m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Finding Points of Intersection

To determine the area between two curves, first find their points of intersection by setting the functions equal to each other. These points serve as the limits of integration, defining the interval over which the area is calculated.
Video consigliato:
04:50
Critical Points

Definite Integral for Area Between Curves

The area between two curves y = f(x) and y = g(x) over an interval [a, b] is found by integrating the difference f(x) - g(x) with respect to x. This integral sums the vertical distances between the curves across the interval.
Video consigliato:
05:23
Finding Area Between Curves on a Given Interval

Trigonometric Functions and Their Properties

Understanding the behavior of trigonometric functions like sin(2x) and cos(2x) is essential, including their periodicity and transformations. This knowledge helps in accurately setting up the integral and interpreting the graph.
Video consigliato:
Percorso guidato
06:21
Properties of Functions
Pratica correlata