Find the area of the region between the curves 4x + y = 12 and x Area between curves = %3D

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
icon
Concept explainers
Question
100%
**Calculus: Finding the Area Between Curves**

In this exercise, we aim to find the area of the region enclosed between two curves, specifically the curves represented by the equations:

1. \( 4x + y^2 = 12 \)
2. \( x = y \)

### Steps to Find the Area

1. **Set the Equations Equal to Find Points of Intersection:**
   
   To find the points where these curves intersect, set \( x = y \) into the first equation:

   \[
   4x + y^2 = 12 \implies 4y + y^2 = 12 \implies y^2 + 4y - 12 = 0
   \]

   Solve this quadratic equation for \( y \):

   \[
   y = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \frac{-4 \pm \sqrt{16 + 48}}{2} = \frac{-4 \pm 8}{2}
   \]

   This gives us two solutions for \( y \):

   \[
   y = 2 \quad \text{and} \quad y = -6
   \]

   Since \( x = y \), the points of intersection are \( (2, 2) \) and \( (-6, -6) \).

2. **Set Up the Integral:**

   The area between the curves can be found using the integral:

   \[
   \text{Area} = \int_{c}^{d} \left[ f(y) - g(y) \right] dy
   \]

   Here, \( f(y) \) is the rightmost function (in this case, \( x = \frac{12 - y^2}{4} \) solved from \( 4x + y^2 = 12 \)) and \( g(y) \) is the leftmost function (in this case, \( x = y \)).

3. **Boundaries of Integration:**

   We integrate with respect to \( y \) from \( -6 \) to \( 2 \):

   \[
   \text{Area} = \int_{-6}^{2} \left( \frac{12 - y^2}{4} - y \right) dy
   \]

4. **Simplify the
Transcribed Image Text:**Calculus: Finding the Area Between Curves** In this exercise, we aim to find the area of the region enclosed between two curves, specifically the curves represented by the equations: 1. \( 4x + y^2 = 12 \) 2. \( x = y \) ### Steps to Find the Area 1. **Set the Equations Equal to Find Points of Intersection:** To find the points where these curves intersect, set \( x = y \) into the first equation: \[ 4x + y^2 = 12 \implies 4y + y^2 = 12 \implies y^2 + 4y - 12 = 0 \] Solve this quadratic equation for \( y \): \[ y = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \frac{-4 \pm \sqrt{16 + 48}}{2} = \frac{-4 \pm 8}{2} \] This gives us two solutions for \( y \): \[ y = 2 \quad \text{and} \quad y = -6 \] Since \( x = y \), the points of intersection are \( (2, 2) \) and \( (-6, -6) \). 2. **Set Up the Integral:** The area between the curves can be found using the integral: \[ \text{Area} = \int_{c}^{d} \left[ f(y) - g(y) \right] dy \] Here, \( f(y) \) is the rightmost function (in this case, \( x = \frac{12 - y^2}{4} \) solved from \( 4x + y^2 = 12 \)) and \( g(y) \) is the leftmost function (in this case, \( x = y \)). 3. **Boundaries of Integration:** We integrate with respect to \( y \) from \( -6 \) to \( 2 \): \[ \text{Area} = \int_{-6}^{2} \left( \frac{12 - y^2}{4} - y \right) dy \] 4. **Simplify the
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Application of Integration
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Calculus: Early Transcendentals
Calculus: Early Transcendentals
Calculus
ISBN:
9781285741550
Author:
James Stewart
Publisher:
Cengage Learning
Thomas' Calculus (14th Edition)
Thomas' Calculus (14th Edition)
Calculus
ISBN:
9780134438986
Author:
Joel R. Hass, Christopher E. Heil, Maurice D. Weir
Publisher:
PEARSON
Calculus: Early Transcendentals (3rd Edition)
Calculus: Early Transcendentals (3rd Edition)
Calculus
ISBN:
9780134763644
Author:
William L. Briggs, Lyle Cochran, Bernard Gillett, Eric Schulz
Publisher:
PEARSON
Calculus: Early Transcendentals
Calculus: Early Transcendentals
Calculus
ISBN:
9781319050740
Author:
Jon Rogawski, Colin Adams, Robert Franzosa
Publisher:
W. H. Freeman
Precalculus
Precalculus
Calculus
ISBN:
9780135189405
Author:
Michael Sullivan
Publisher:
PEARSON
Calculus: Early Transcendental Functions
Calculus: Early Transcendental Functions
Calculus
ISBN:
9781337552516
Author:
Ron Larson, Bruce H. Edwards
Publisher:
Cengage Learning