# Having problems with numerical methods question

• Apr 14th 2010, 01:43 PM
mistry88
Having problems with numerical methods question
How would I do the following 2 questions below??

Thanks :)
• Apr 14th 2010, 01:47 PM
harish21
Quote:

Originally Posted by mistry88
How would I do the following 2 questions below??

Thanks :)

integrate by parts.

let \$\displaystyle u = tan^-1(x)\$, and let \$\displaystyle dv = x dx\$. Then proceed.

have you done integration by parts before?
• Apr 14th 2010, 01:51 PM
mistry88
Quote:

Originally Posted by harish21
integrate by parts.

let \$\displaystyle u = tan^-1(x)\$, and let \$\displaystyle dv = x dx\$. Then proceed.

have you done integration by parts before?

O ok thank you, yes I have done integration by parts before. I just proved it to equal the answer, but now don't know how to do the second part..
• Apr 15th 2010, 03:33 AM
mr fantastic
Quote:

Originally Posted by mistry88
O ok thank you, yes I have done integration by parts before. I just proved it to equal the answer, but now don't know how to do the second part..

Where are you stuck? What have you tried? Have you reviewed your class notes and textbook for the formula?
• Apr 15th 2010, 03:35 AM
mistry88
Its ok now, I have figured out how to do it and have finished this question :D
• Apr 15th 2010, 03:37 AM
mr fantastic
Quote:

Originally Posted by mistry88
How would I do the following 2 questions below??

Thanks :)

These questions look like they could be part of an assignment that counts towards your final grade. MHF policy is to not knowingly help with such questions as they are meant to be the work of the student not the work of others.

Thread closed. Please feel free to pm me to discuss this further.