Hits: 84

# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2009 | June | Q#11

Hits: 84   Question The curve C has equation The point P has coordinates (2, 7). a)   Show that P lies on C. b)  Find the equation of the tangent to C at P, giving your answer in the form y=mx+c, where m and c  are constants. The point Q also lies on C. Given that the […]

# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2009 | June | Q#6

Hits: 9   Question The equation x2 + 3px + p = 0, where p is a non-zero constant, has equal roots. Find the value of p. Solution We are given that; We are given that given equation has equal roots. For a quadratic equation , the expression for solution is; Where  is called discriminant. If , the […]

# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2009 | June | Q#4

Hits: 15   Question Find the set of values of x for which a.    b.    c.   both  and Solution a.   We are given; b.   We are required to solve the inequality; We solve the following equation to find critical values of ; Now we have two options; Hence the critical points on the curve for the […]

# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2009 | January | Q#7

Hits: 23   Question The equation kx2 + 4x + (5 – k) = 0, where k is a constant, has 2 different real solutions for x. a.   Show that k satisfies k2 – 5k + 4 > 0. b.   Hence find the set of possible values of k. Solution a.   We are given;   We are given […]