1.

\({{\rm{I}}_{\rm{m}}} = \mathop \smallint \nolimits_0^{\rm{\pi }} \frac{{\sin 2{\rm{mx}}}}{{\sin {\rm{x}}}}{\rm{dx}},\)What is I1 equal to?

A. 0
B. 1 / 2
C. 1
D. 2
Answer» B. 1 / 2


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