\[\int_{{}}^{{}}{\frac{\sin 3x}{\sin x}\ dx=}\]

1.	\[\int_{{}}^{{}}{\frac{\sin 3x}{\sin x}\ dx=}\]
A.	\[x+\sin 2x+c\]
B.	\[3x+\sin 2x+c\]
C.	\[3x+{{\sin }^{2}}x+c\]
D.	None of these
Answer» B. \[3x+\sin 2x+c\]

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\[\int_{{}}^{{}}{\frac{\sin 3x}{\sin x}\ dx=}\]

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