Use reduction formulas to evaluate the integral.
A. 
tan4 2x - 
tan2 2x + 
ln
+ C
B. 
tan4 2x - 
tan2 2x - ln
+ C
C. - 
tan4 2x + 
tan2 2x - 
ln
+ C
D. 
tan4 2x - 
tan2 2x - 
ln
+ C
Answer: D
Mathematics
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