If y x2 - frac 1 x find frac delta y delta x - JAMB Mathematics 2012 Question
If y = x2 - (\frac{1}{x}), find (\frac{\delta y}{\delta x})
A
2x - \(\frac{1}{x^2}\)
B
2x + x2
C
2x - x2
D
2x + \(\frac{1}{x^2}\)
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Correct Option: D
y = x2 - (\frac{1}{x})
y = x2 - x-1
(\frac{\delta y}{\delta x}) = 2x + x-2
(\frac{\delta y}{\delta x}) = 2x + (\frac{1}{x^2})
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