Question

If y = 2xn+1 + $\frac{3}{x^n}$ then x2$\frac{d^2y}{dx^2}$ is

• A. 6n(n + 1)y
• B. n(n + 1)y
• C. $x\frac{dy}{dx}+y$
• D. y

Answer 1

Answer: (B)

n(n + 1)y

Answer 2

The correct answer is (B) : n(n + 1)y.