Questions: Question 10, 5.6.91
Find the area of the region enclosed by the following curves
y = sec^2 x, y = tan^2 x, x = -π/6, and x = π/6
The area of the region enclosed by the curves is .
(Type an exact answer, using π as needed.)
Transcript text: Question 10, 5.6.91
Find the area of the region enclosed by the following curves
$y=\sec ^{2} x, y=\tan ^{2} x, \quad x=-\frac{\pi}{6}$, and $x=\frac{\pi}{6}$
The area of the region enclosed by the curves is $\square$ .
(Type an exact answer, using $\pi$ as needed.)
Solution
Solution Steps
To find the area of the region enclosed by the curves \( y = \sec^2 x \) and \( y = \tan^2 x \) between \( x = -\frac{\pi}{6} \) and \( x = \frac{\pi}{6} \), we need to set up an integral. The area can be found by integrating the difference of the two functions over the given interval.
Identify the interval of integration: \( x = -\frac{\pi}{6} \) to \( x = \frac{\pi}{6} \).
Determine the integrand: \( \sec^2 x - \tan^2 x \).
Integrate the function over the specified interval.
Step 1: Identify the Interval of Integration
We need to find the area enclosed by the curves \( y = \sec^2 x \) and \( y = \tan^2 x \) between \( x = -\frac{\pi}{6} \) and \( x = \frac{\pi}{6} \).
Step 2: Determine the Integrand
The integrand is the difference between the two functions:
\[ \sec^2 x - \tan^2 x \]
Step 3: Set Up the Integral
We set up the integral of the difference of the functions over the interval from \( x = -\frac{\pi}{6} \) to \( x = \frac{\pi}{6} \):
\[ \int_{-\frac{\pi}{6}}^{\frac{\pi}{6}} (\sec^2 x - \tan^2 x) \, dx \]
Step 4: Evaluate the Integral
Evaluating the integral, we get:
\[ \int_{-\frac{\pi}{6}}^{\frac{\pi}{6}} (\sec^2 x - \tan^2 x) \, dx = \frac{\pi}{3} \]