AL Pure Papers

Question 1

Jun19 Pure P1 q5ci

Describe fully the transformation that maps the curve with equation y = f(x) onto the curve with equation y = g(x) where
g(x) = 2(x – 2)^2 + 4x – 3
(2)

Answer 1

translate (2 -4)

Question 2

Jun19 P2 q2b

a) use trapezium rule to estimate distance of jet in 25 seconds, given speed every 5 seconds.
Given the jet accelerated smoothly in these 25 seconds, explain whether your answer to part (a) is an underestimate or an overestimate of the length of runway used by the jet to take off. (1)

Answer 2

Overestimate
- top of trapezia above curve/ area of trapezia > area under curve