Evaluate the following integrals using a trigonometric substitution. Hint: complete the square for part b. x² a) √ 1²2 da S dx b) / x² + 6x dx (Note: A clever way to evaluate the first integral is to add and subtract one to the numerator or use long division. No points will be given for these approaches.) 1+x² [² x² +1 -1 1+x² - / (1+2-1+₂) dx = x-tan-¹x+C 1+x² 1+x² dx =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 98E
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Evaluate the following integrals using a trigonometric substitution. Hint: complete the
square for part b.
a) S
x²
1+x²
dx
b)
[√x² + 6x da
dx
(Note: A clever way to evaluate the first integral is to add and subtract one to the numerator or use
long division. No points will be given for these approaches.)
x² + 1 1
1
[²
- / (₁+² -₁ -²) ² -
(1
tan ¹x + C
-1
1+x²
1+x²
dx
dx =X -
Transcribed Image Text:Evaluate the following integrals using a trigonometric substitution. Hint: complete the square for part b. a) S x² 1+x² dx b) [√x² + 6x da dx (Note: A clever way to evaluate the first integral is to add and subtract one to the numerator or use long division. No points will be given for these approaches.) x² + 1 1 1 [² - / (₁+² -₁ -²) ² - (1 tan ¹x + C -1 1+x² 1+x² dx dx =X -
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