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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 |
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Answer» 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 |
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