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})
Correct Answer: Option D
Explanation
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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