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New to the forums, trouble with an integral

  • Thread starter jhayes25
  • Start date
Hello all, I am new to these forums. I'm having trouble with a problem on homework. It seems simple but it is giving me problems.

It is an indefinite integral: Integral of (Sin(2x))/(Sinx)dx

Is there a way to use substitution? Help is appreciated.
 
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[tex]\int\frac{\sin{2x}}{\sin x}dx[/tex]

Use the trig identity.

[tex]\sin{2x}=2\sin x \cos x[/tex]
 
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Use the identity:

[tex]sin(2x) = 2sin(x)cos(x)[/tex]
 
roco, that is correct. Obviously a newb, I have no idea how you did that. I'm sure there are stickies somewhere that I need to read.
 
Alright, wow that is simple when you now the identities. Guess i should get to learning those lol thx awvvu
 

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