7.3 Trigonometric Substitution

# 7.3 Trigonometric Substitution - 7.3 Trigonometric...

• Notes
• nizhes
• 7

This preview shows pages 1–4. Sign up to view the full content.

7.3 Trigonometric Substitution In this section, we use the method of trigonometric substitution to evaluate integrals involving the radicals , 2 2 x a - , 2 2 x a + 2 2 a x - and where a > 0 REFER to the handout for Trigonometric Substitution The objective with trigonometric substitution is to eliminate the radical in the integrand by using the Pythagorean identities.

This preview has intentionally blurred sections. Sign up to view the full version.

Examples: Evaluate the integral. 1) 2) - 9 16 2 2 x x dx dx x x - 2 2 5 dx x x + 2 0 2 3 4 3) ( 29 - 2 / 3 2 4 x x dx 4) 5) + - 13 6 2 t t dt
- 9 16 2 2 x x dx let θ θ θ θ π θ π π θ θ d dx x x tan sec 4 3 sec 4 3 2 3 or 2 0 , sec 3 4 = = < < = θ θ θ θ tan 3 tan 3 tan 9 9 sec 9 9 16 2 2 2 = = = - = - x and Note: 0 tan θ because 2 3 or 2 0 π θ π π θ < < ( 29 + = = = = - C d d d x x dx θ θ θ θ θ θ θ θ θ θ sin 9 4 cos 9 4 sec 1 9 4 tan 3 sec 16 9 tan sec 4 3 9 16 2 2 2 3 θ 4 x 9 16 2 - x Use the right triangle to covert back to x ’s θ C x x C x x + - = + - = 9 9 16 4 9 16 9 4 2 2

This preview has intentionally blurred sections. Sign up to view the full version.

This is the end of the preview. Sign up to access the rest of the document.
• Spring '08
• varies

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern