can anyone PLEASE help a desparate calculus students with the following...

  • Thread starter Thread starter confusedkid
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C

confusedkid

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...integration problems? please help me integrate the following problems:

1. (x+3)/ (x^2+9) dx
2. 2/ (x^2+2) dx
3. 1/ [ (1+x)sqrt(x) ] dx
4. e^4 / sqrt(1-e^2x) dx
 
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