The least integral value of 'k' for which is positive for all real value of is:

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

The least integral value of 'k' for which (k−1)x2−(k+1)x+(k+1)(k-1)x^2 - (k+1)x + (k+1) is positive for all real value of xx is: (a) 1 (b) 2 (c) 3 (d) 4

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