GRADE 11 · MATHEMATICS · TOPIC 2

Relations and Functions

Functions map each permitted input to exactly one output.

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CONCEPT EXPLAINED

Understand the concept

Functions map each permitted input to exactly one output.

SOLVED EXAMPLE

f(x)=2x+1. Find f(3).

  1. Step 1: 2×3+1.

Final answer: 7

PRACTISE YOURSELF

Find f(5)

Show the answer

11

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