Question

$x = 2at$

• A. $x = 2a\sin^{2}t$
• B. $\int_{}^{}\frac{x\mspace{6mu} dx}{1 - x\cot x} =$
• C. $\log(\cos x - x\sin x) + c$
• D. None of these

Answer 1

Answer: (C)

$\log(\cos x - x\sin x) + c$

Answer 2

Put$3\sec^{3}x + c$.