Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= 
tann-1 x - 
B. 
= tann-1 x - 
C. 
= 
tann-2 x - 
D. 
= 
tann-1 x + 
Answer: A
Mathematics
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? 
A. 
B. 
C. - 
D. 
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