1.

\(\smallint \frac{{{\rm{sin}}\frac{{5{\rm{x}}}}{2}}}{{{\rm{sin}}\frac{{\rm{x}}}{2}}}{\rm{dx}}\) is equal to (where c is a constant of integration.)

A. 2x + sin x + 2 sin 2x + C
B. x + 2 sin x + 2 sin 2x + C
C. x + 2 sin x + sin 2x + C
D. 2x + sin x – sin 2x + C
Answer» D. 2x + sin x – sin 2x + C


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