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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Given the inequality ax + k^2 > 0 . The complete set of values of ' a ' so that **(A)** The inequality is valid for all values of x and k is **(P)** R **(B)** There exists a value of x such that the inequality is valid for any value of k is **(Q)** **(C)** There exists a value of k such that the inequality is valid for all values of x is **(R)** 0 **(D)** There exists values of x and k for which inequality is valid i

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