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1.3 Functions

1.3 Functions

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Question 72

The vertical displacement sss (in metres) of a high-performance drone during a test maneuver is modelled by the polynomial function

s(t)=2t4+pt3−8t2+qt+22 s(t) = 2t^4 + pt^3 - 8t^2 + qt + 22 s(t)=2t4+pt3−8t2+qt+22

where ttt represents the time in seconds after the maneuver begins, and ppp and qqq are constant coefficients.

a.

When s(t)s(t)s(t) is divided by (t+1)(t + 1)(t+1), the remainder is 777. Show that p+q=9p + q = 9p+q=9.

[2]
b.

When s(t)s(t)s(t) is divided by (t−2)(t - 2)(t−2), the remainder is 101010. Find the value of ppp and the value of qqq.

[4]
Markscheme

1.3 Functions Questions

  1. A Level
  2. /Maths
  3. /1.3 Functions

181 exam-style questions on OCR (MEI) A Level Maths 1.3 Functions, covering 1.3.1 Operations on polynomials, 1.3.2 Factor theorem, 1.3.3 Definition of a function (A-level only), 1.3.4 Composite functions (A-level only), 1.3.5 Inverse functions and their graphs (A-level only), 1.3.6 The modulus function (A-level only), 1.3.7 Inequalities with a modulus sign (A-level only), and 1.3.8 Functions in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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