Inequalities (Edexcel -2008) Archives — O/A Level Solutions

Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2008 | June | Q#8

Question Given that the equation 2qx2 + qx – 1 = 0, where q is a constant, has no real roots, a. show that q2 + 8q < 0. b. Hence find the set of possible values of q. Solution a. We are given; We are given that given equation has no real roots. For a […]

Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2008 | January | Q#8

Question The equation x2 + kx + 8 =k has no real solutions for x. a. Show that k satisfies k2 + 4k – 32 >0. b. Hence find the set of possible values of k. Solution a. We are given; We are given that given equation has no real roots. For a quadratic equation […]