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The number of integral value of a for which the expression ax2+(a-1)x-1 is negative for exactly two integral values of x is

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Detailed Solution

ax2+(a−1)x−1=axx+1−x+1=x+1ax−11<1a≤212≤a<1x=0,1No value of a such that ax2+(a-1)x-1 is negative at two integer values of x.

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