Correct Answer: Option D

Explanation

\(y = x^{2} - \frac{1}{x} = x^{2} - x^{-1}\)

\(\frac{\mathrm d y}{\mathrm d x} = 2x - (- x^{-2})\)

= \(2x + \frac{1}{x^{2}}\)

• If the power of a lens is +2.5D. Calculate the radius of curvature (a). 80cm (b). 40cm (c). 25cm (d).... Answer this

  1 Answers   ·   Physics   ·   2 days ago
• Subjects to learn under petroleum engineering? Answer this

  1 Answers   ·   2 days ago
• what is the cut of mark for medical doctor in university and list all the university? Answer this

  1 Answers   ·   20 hours ago