Asked by Anonymous
                How do I integrate this ∫[0,2pi](√cos^2 (t)+ 4 cos^2 (2t)+ 9 cos^2 (3t) )
            
            
        Answers
                    Answered by
            oobleck
            
    First, move your left parenthesis inside the radical.
Then, use some numerical technique.
I get 16.0264
    
Then, use some numerical technique.
I get 16.0264
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