Question

If a and b are fixed non-zero constants, then the derivative of \(\frac{a}{x^4}-\frac{b}{x^2}\) + cos x is ma + nb - p where

• A. m = 4x³; \(n=\frac{-2}{x^3}\); p = sinx
• B. \(m =\frac{-4}{x^5}\); \(n=\frac{2}{x^3}\); p = sinx
• C. \(m =\frac{-4}{x^5}\); \(n=\frac{2}{x^3}\); p = -sinx
• D. m = 4x³; \(n=\frac{2}{x^3}\); p = -sinx

Answer 1

The Correct Option is B

The correct answer is () :