JEE Main 31-Aug-2021 Shift 1 Solved Paper

Section: Mathematics

Question : 84 of 90

Marks: +1, -0

If R is the least value of a such that the function f(x)=x2+ax+1 is increasing on [1,2] and S is the greatest value of a such that the function f(x)=x2+ax+1 is decreasing on [1,2], then the value of |R−S| is

[31 Aug 2021 Shift 1]

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