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Tuesday, 03 March 2026
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If \(y = x^2 - \frac{1}{x}\). find dy/dx

If \(y = x^2 - \frac{1}{x}\). find dy/dx
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 2x - (1/x2)
  • B 2x + x2
  • C 2x - x2
  • D 2x + (1/x2)
Correct Answer: Option D
Explanation:
\(y = x^{2} - \frac{1}{x} = x^{2} - x^{-1}\)
\(\frac{\mathrm d y}{\mathrm d x} = 2x - (- x^{-2})\)
= \(2x + \frac{1}{x^{2}}\)

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