home > q&a board > calculus > topic: how do i integrate??

Q BgQuestion:

Apprentice
Karma Points: 127
Respect (100%):
posted by  Lilly's Daddy on 7/23/2008 10:39:27 PM  |  status: Closed  

How do I integrate??

Course Textbook Chapter Problem
Calculus N/A N/A N/A
Question Details:
I need help getting started with integrating
        I don't quite know which method to use. 
I help when I can, please do the same. Don't forget to rate!

AAnswers:

Answer Question
Oracle
Karma Points: 32,267
posted by Altair on 7/23/2008 10:48:28 PM  |  status: Live
Asker's Rating: Lifesaver   
Lilly's Daddy's comment:
"is that equality achieved by partial fractions or are you just able to see it that fast?"
Response Details:
x2 /(1+x2) = 1 - 1/(1+x2)
 
 

Don't forget give me good rating  to show your respect for my time to help you!
Tags: Math, Calculus
Sage
Karma Points: 6,066
posted by leettab on 7/23/2008 10:53:23 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:
you can use trig substitution to evaluate this integral






mak the substitution into the integral










integrating we get



now we have to get back into terms of x





so our answer is
Tags: Math, Calculus
Answer Question
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today » How Cramster is different than tutoring »

Need Help In

Useful Links