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# Integration question watch

1. Solve ∫1/(1-√(x+3)) dx
2. (Original post by B_9710)
Solve ∫1/(1-√(x+3)) dx
What have you tried? This isn't a homework solving site.
4. (Original post by the bear)
(Original post by B_9710)
Solve ∫1/(1-√(x+3)) dx
And maybe offer us a cookie or two.
5. did you try a substitution yet ?
6. Hmm even I've forgot to do this which is embarrassing

If I'm not mistaken, you'll have to make 2 substitutions, and you should end up with ln in your answer
7. (Original post by ubisoft)
Hmm even I've forgot to do this which is embarrassing

If I'm not mistaken, you'll have to make 2 substitutions, and you should end up with ln in your answer
one substitution suffices
8. (Original post by B_9710)
Solve ∫1/(1-√(x+3)) dx
best approach substitution the entire denominator
solve for x before differentiating
9. (Original post by Zacken)
What have you tried? This isn't a homework solving site.
I can do it. I just want to see how other people solve it.
10. I like seeing how other people solve problems to see if I can pick up any tips or shortcuts or anything like that.
11. (Original post by B_9710)
I can do it. I just want to see how other people solve it.
u = sqrt(x+3)
12. (Original post by Zacken)
What have you tried? This isn't a homework solving site.
And no it isn't homework. I just made the question up
13. OP what was your answer? I've tried it, this is what I got:

2ln[1+sqrt(x+3)] - 2sqrt(x+3) + c

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Updated: November 9, 2015
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