\[\int_{{}}^{{}}{\frac{dx}{4{{\cos }^{3}}2x-3\cos 2x}}=\]

1.	\[\int_{{}}^{{}}{\frac{dx}{4{{\cos }^{3}}2x-3\cos 2x}}=\]
A.	\[\frac{1}{3}\log [\sec 6x+\tan 6x]+c\]
B.	\[\frac{1}{6}\log [\sec 6x+\tan 6x]+c\]
C.	\[\log [\sec 6x+\tan 6x]+c\]
D.	None of these
Answer» C. \[\log [\sec 6x+\tan 6x]+c\]

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\[\int_{{}}^{{}}{\frac{dx}{4{{\cos }^{3}}2x-3\cos 2x}}=\]

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