\[\int_{{}}^{{}}{{{\sin }^{5}}x{{\cos }^{4}}x\ dx=}\]

1.	\[\int_{{}}^{{}}{{{\sin }^{5}}x{{\cos }^{4}}x\ dx=}\]
A.	\[-\frac{1}{5}{{\cos }^{5}}x+\frac{2}{7}{{\cos }^{7}}x-\frac{1}{9}{{\cos }^{9}}x+c\]
B.	\[\frac{1}{5}{{\cos }^{5}}x+\frac{2}{7}{{\cos }^{7}}x-\frac{1}{9}{{\cos }^{9}}x+c\]
C.	\[\frac{1}{5}{{\cos }^{5}}x+\frac{2}{7}{{\cos }^{7}}x+\frac{1}{9}{{\cos }^{9}}x+c\]
D.	None of these
Answer» B. \[\frac{1}{5}{{\cos }^{5}}x+\frac{2}{7}{{\cos }^{7}}x-\frac{1}{9}{{\cos }^{9}}x+c\]

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\[\int_{{}}^{{}}{{{\sin }^{5}}x{{\cos }^{4}}x\ dx=}\]

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