Question

$x=\frac{1-\sqrt{y}}{1+\sqrt{y}}\Rightarrow \frac{dy}{dx}$ is equal to

• A. $\frac{4}{x+1^2}$
• B. $\frac{4x-1}{x+1^3}$
• C. $\frac{x-1}{1+x^3}$
• D. $\frac{4}{x+1^3}$

Answer 1

Answer: (B)

Correct answer is (b) $\frac{4x-1}{x+1^3}$