\({{\rm{a}}_{\rm{n}}} = \mathop \smallint \limits_0^{\rm{\pi }} \frac{ – McqOptions

MCQOPTIONS

1.	\({{\rm{a}}_{\rm{n}}} = \mathop \smallint \limits_0^{\rm{\pi }} \frac{{{{\sin }^2}\left\{ {\left( {{\rm{n}} + 1} \right){\rm{x}}} \right\}}}{{\sin 2{\rm{x}}}}{\rm{dx}}\)What is an-1 – an-4 equal to?
A.	-1
B.	0
C.	1
D.	2
Answer» C. 1

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