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Home  >>  CBSE XII  >>  Math  >>  Application of Derivatives

The least value of '‘a'’ such that the function $ f(x)=x^2+ax+1 $ is strictly increasing on (1,2) is \[(a)\;-2\qquad(b)\;2\qquad(c)\;\frac{1}{2}\qquad(d)\;-\frac{1}{2}\]

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