Math Problem Statement
Solve the question
Solution
To solve for the area between the curves and , we need to follow these steps:
Step 1: Find the points of intersection.
The curves and intersect at points where they have the same -value. This means we need to solve the equation .
For :
In this case, , so the equation becomes: Factoring this gives: Thus, or . Since we are considering , we have .
For :
In this case, , so the equation becomes: Factoring gives: Thus, or . Since , we take .
Step 2: Set up the integral.
The area between the curves is the integral of the difference between the two functions over the interval where they overlap, which is . We split the integral into two parts based on the symmetry of :
- For , .
- For , .
Thus, the total area is given by:
Step 3: Compute the integrals.
First integral ():
Evaluating these integrals:
Thus, the first integral becomes:
Second integral ():
Evaluating these integrals:
Thus, the second integral becomes:
Step 4: Add the results.
The total area is:
Thus, the area between the curves is .
Would you like more details on any step?
Here are five related questions:
- How do you solve the system of equations to find points of intersection?
- What is the significance of symmetry in integrals involving absolute values?
- How can you check if two functions always intersect at certain points?
- How does the absolute value affect the integration process in such problems?
- How would you find the area if the limits of integration were different?
Tip: When dealing with absolute values in integrals, split the integral into regions where the function behaves linearly for easier calculations.
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Math Problem Analysis
Mathematical Concepts
Calculus
Area Between Curves
Definite Integrals
Absolute Value
Formulas
Area between curves formula: ∫[a to b] (f(x) - g(x)) dx
Points of intersection for absolute value functions and parabolas
Theorems
Fundamental Theorem of Calculus
Properties of Definite Integrals
Symmetry in integrals involving absolute values
Suitable Grade Level
Grades 11-12