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Help with Integral

  • Thread starter laker88116
  • Start date
57
0
[tex] \int \frac{\(x+9}{x^2+9} dx [/tex]

I am not sure where to start. I have a feeling that I need to subsitute twice, but I just don't know what to use first. Any help is appreciated.
 

Answers and Replies

Pyrrhus
Homework Helper
2,160
1
Try

[tex] \int \frac{x dx}{x^{2}+9} + 9 \int \frac{dx}{x^{2}+9} [/tex]
 
57
0
Wow, that changes everything, ln and tan inverse I think just looking at it, let me try this, I can't believe I overlooked that.
 
57
0
Yea, I solved it, thank you for the help.
 

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