Question

$x + 4\log(1 - x) + c$

• A. $x + 4\log(x - 1) + c$
• B. $\int_{}^{}\frac{dx}{4\cos^{3}2x - 3\cos 2x} =$
• C. $\frac{1}{3}\log\lbrack\sec 6x + \tan 6x\rbrack + c$
• D. None of these

Answer 1

Answer: (C)

$\frac{1}{3}\log\lbrack\sec 6x + \tan 6x\rbrack + c$

Answer 2

$\sin x - \frac{2}{3}\sin^{3}x - \frac{1}{5}\sin^{5}x + c$

$\int_{}^{}{\sec x\tan^{3}x\mspace{6mu} dx =}$

$\frac{1}{3}\sec^{3}x - \sec x + c$.