# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2005 | Oct-Nov | (P2-9709/02) | Q#6

Question A curve is such that . The point (0, 1) lies on the curve.      i. Find the equation of the curve.    ii. The curve has one stationary point. Find the x-coordinate of this point and determine whether it  is a maximum or a minimum point. Solution      i.   We […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#4

Question Relative to an origin , the position vectors of the points , and   are given by where  is a constant. i.       In the case where , use a scalar product to show that   .    ii.       Find the values of q for which the length of  is 6 units. Solution i.   We are given that . Therefore, The angle POQ is […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#1

Question Solve the equation , for . Solution We have; We need to express the equation in terms of single trigonometric ratio; We have the trigonometric identity; We can write it as; Hence the equation becomes; To solve this equation for , we can substitute . Hence, Now we have two options; Since; Using calculator we can find the values of . We […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#8

Question A function f is defined by  for .      i.       Find an expression, in terms of , for  and show that f is an increasing function.    ii.       Find an expression, in terms of , for  and find the domain of . Solution i.   We have the function; The expression for  represents derivative of . Rule for differentiation is of  is: Rule for differentiation […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#3

Question In the diagram, ABED is a trapezium with right angles at E and D, and CED is a straight line. The lengths of AB and BC are  and  respectively, and angles BAD and CBE are and  respectively. i.       Find the length of CD in terms of .    ii.       Show that angle CAD = Solution From the given information we can […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#2

Question In the diagram, OAB and OCD are radii of a circle, centre O and radius 16 cm. Angle radians. AC and BD are arcs of circles, centre O and radii 10 cm and 16 cm respectively. i.       In the case where , find the area of the shaded region.    ii.       Find the value of  for which the perimeter of […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#10

Question A curve is such that  and (1, 4) is a point on the curve. i.       Find the equation of the curve.    ii.        A line with gradient  is a normal to the curve. Find the equation of this normal, giving your answer in the form .   iii.       Find the area of the region enclosed by the curve, the […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#9

Question The equation of a curve is  and the equation of a line  is , where  is a constant. i.       In the case where , find the coordinates of the points of intersection of  and the curve.    ii.       Find the set of values of  for which  does not intersect the curve.   iii.       In the case where , one of the […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#7

Question Three points have coordinates A (2, 6), B (8, 10) and C (6, 0). The perpendicular bisector of AB meets the line BC at D. Find     i.       the equation of the perpendicular bisector of AB in the form ax + by = c,    ii.       the coordinates of D. Solution i.   To write the equation of the perpendicular bisector of […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#5

Question The diagram shows the cross-section of a hollow cone and a circular cylinder. The cone has radius 6 cm and height 12 cm, and the cylinder has radius  cm and height cm. The cylinder just fits inside the cone with all of its upper edge touching the surface of the cone. i.       Express h in terms of r and […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2005 | Oct-Nov | (P1-9709/01) | Q#6

Question A small trading company made a profit of \$250 000 in the year 2000. The company considered two different plans, plan A and plan B, for increasing its profits. Under plan A, the annual profit would increase each year by 5% of its value in the preceding year.  Find, for plan A,     i.       the profit for the year 2008    […]