# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#7

Question      i.       Find      ii.       Without using a calculator, find the exact value of giving your answer in the form , where a and b are integers.   Solution      i.   We are required to find;   provided that   Rule for integration of  is: We integrate both parts  and  one by […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#6

Question The equation of a curve is  . At the point on the curve with positive x-coordinate p, the gradient of the curve is .        i.       Show that .      ii.       Show by calculation that 2 < p < 3.     iii.       Use an iterative formula based on the equation in part […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#5

Question A curve is defined by the parametric equations for .       i.       Show that .    ii.       Find the coordinates of the stationary point.   iii.       Find the gradientof the curve at point . Solution      i.   We are required to show that  for the parametric equations given below; If a curve […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#3

Question Given that 3ex +8e−x = 14, find the possible values of ex and hence solve the equation 3ex +8e−x = 14 correct to 3 significant figures. Solution We are given; Let ; Now we have two options. Since ; Taking logarithm of both sides;  and are inverse functions. The composite function is an identity […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#2

Question Solve the equation for . Solution We are given;  except where  or undefined Now we have two options. Using calculator; Now we find all solutions in the interval . Properties of Domain Range Periodicity Odd/Even Translation/ Symmetry We utilize the periodicity/symmetry property of   to find other solutions (roots) of :  Therefore; For ; […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#1

Question Find the gradient of the curve at the point for which x = 0. Solution Gradient (slope) of the curve is the derivative of equation of the curve. Hence gradient of curve with respect to  is: We are given that; Therefore; Rule for differentiation of  is: Rule for differentiation of natural exponential function is; […]

# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2016 | May-Jun | (P2-9709/21) | Q#4

Question The polynomial  is defined by i.       Find the quotient when  is divided by ,  and show that the remainder is 5.    ii.       Hence factorise  completly. Solution      i.   Hence quotient is and remainder is .      ii.   We are required to factorise; When a polynomial, , is […]