# Homework Help: Integration by tables, totally confused

1. Jan 22, 2015

• Moved from a technical math section, so no template
I would really appreciate it if people could help with these integrals.
We are supposed to be doing integrals with this table here:
http://math.boisestate.edu/~wright/courses/m333/IntegralTablesStewart.pdf

Here are the two integrals.
Technically, I only need one of them completed.
http://s8.postimg.org/nobr36u51/Screenshot_245.png [Broken]
http://s10.postimg.org/yl71ys3nt/Screenshot_247.png [Broken]

Jesus
I have been working at both of these for over an hour which is not a good idea, but they are just not making sense.

For one, wolfram alpha isn't even working.
After doing poly division with (screenshot)247, I've been getting nowhere.

For 245, I just cannot find a single integral on the whole table to use.
I would really appreciate a quick solution. An answer would be nice but pointing out EXACTLY which integral in the table is needed for each would be great as well... Especially because I have LITERALLY been working on these for... now 2 hours.

Last edited by a moderator: May 7, 2017
2. Jan 22, 2015

### Stephen Tashi

$\int{ \frac{-1}{x^2 \sqrt{4x^2 + 9 } } } dx$
How did you get logarithms? Did you apply formula 28 ?

3. Jan 22, 2015