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1.3 Functions

1.3 Functions

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Question 13

The function f f\,f is defined by f(x)=∣x∣+5f(x) = |x| + 5f(x)=∣x∣+5 for x∈Rx \in \mathbb{R}x∈R.

Using set notation, state the range of fff.

Circle your answer.

A

{f(x):f(x)≥0}\{f(x) : f(x) \geq 0\}{f(x):f(x)≥0}

B

{f(x):f(x)≥5}\{f(x) : f(x) \geq 5\}{f(x):f(x)≥5}

C

{f(x):f(x)>5}\{f(x) : f(x) > 5\}{f(x):f(x)>5}

D

{f(x):f(x)≤5}\{f(x) : f(x) \leq 5\}{f(x):f(x)≤5}

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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