Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Applications of Derivatives

Question:

For $x<\frac{1}{2}$, derivative of $\tan ^{-1}\left(\frac{1+2 x}{1-2 x}\right)$ with respect to $\sqrt{1+4 x^2}$ is:

Options:

$\frac{2 x}{1+4 x^2}$

$\frac{1}{2 x \sqrt{1+4 x^2}}$

$\frac{1}{x \sqrt{1+4 x^2}}$

$2 x \sqrt{1+4 x^2}$

Correct Answer:

$\frac{1}{2 x \sqrt{1+4 x^2}}$

Explanation:

The correct answer is Option (2) → $\frac{1}{2 x \sqrt{1+4 x^2}}$