Help with Integral

  • Thread starter laker88116
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  • #1
laker88116
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[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

  • #2
Pyrrhus
Homework Helper
2,184
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Try

[tex] \int \frac{x dx}{x^{2}+9} + 9 \int \frac{dx}{x^{2}+9} [/tex]
 
  • #3
laker88116
57
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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.
 
  • #4
laker88116
57
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Yea, I solved it, thank you for the help.
 

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