What is the value of ( int_0^ (sech x)^5 dx )?

1.	What is the value of ( int_0^ (sech x)^5 dx )?
A.	( frac{3 pi}{80} )
B.	( frac{3 pi}{240} )
C.	( frac{3 pi}{16} )
D.	( frac{ pi}{240} )
Answer» D. ( frac{ pi}{240} )

Discussion

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