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Integration by tables, totally confused

  • #1
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.
 
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Answers and Replies

  • #2
Stephen Tashi
Science Advisor
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[itex] \int{ \frac{-1}{x^2 \sqrt{4x^2 + 9 } } } dx [/itex]
How did you get logarithms? Did you apply formula 28 ?
 
  • #3
No, I tried a lot of ones like 62 where they have u terms on the bottom outside of the sqrt.
 
  • #4
Stephen Tashi
Science Advisor
7,027
1,250
Try 28.
 

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