wlooi Messages 7 Reaction score 0 Thread starter Oct 12, 2011 #1 ∫sin x√(1+cos2x) dx This question have bugged me for 2 days. Need help please..
DivisionByZro Messages 250 Reaction score 1 Oct 12, 2011 #2 Have you tried letting u=cosx, du=-sinxdx? You're then left with something that you can yet use another substitution on. Let's see what you can get.
Have you tried letting u=cosx, du=-sinxdx? You're then left with something that you can yet use another substitution on. Let's see what you can get.