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\(\int \frac{\cos 2 x}{\cos x} d x=\)
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Verified Answer
The correct answer is:
\(2 \sin x-\log |\sec x+\tan x|+C\)
Hints: \(\int \frac{2 \cos ^2 x-1}{\cos x} d x=2 \sin x-\log |\sec x+\tan |\)
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