Question

To evaluate$\tan(3x - 5) + c$, the most suitable substitution is.

• A. $\frac{1}{2}\cot^{- 1}x^{2} + c$
• B. $\frac{1}{2}\tan^{- 1}x^{2} + c$
• C. $\cot^{- 1}x^{2} + c$
• D. None of these

Answer 1

Answer: (C)

$\cot^{- 1}x^{2} + c$

Answer 2

The most suitable substitution is $6ax^{2} + 4bx^{3} + 3cx^{4} + k$