# R00505 Functions and Relations

Goals

Functions Overview was difficult because it carried the whole volume of Grade 11 with it. Here is an easy lecture. Relations define a relationship between input variables and output variables. For and relation to be called a function there can be only one output variable - y for every input variable -x There are two types of functions
We use a We use the You must be able to identify the |

External Links

Siyavula | ||

The Maths Page | ||

Mathplanet | ||

Kahn | ||

Exam Solutions..... | Functions and Relations | |

Varsity Tutors | ||

Maths is Fun | Functions | |

Wolfram Mathworld | ||

Mathworks | ||

FreeMathHelp | What are Functions | |

Purple Math | Functions and Relations | |

Meta Calculator |

# Advanced

Beyond the Grade 12 Syllabus - only advanced students should follow

The Maths Page | Rational Functions | |

Wikipedia | Function Composition |

# Exercises

Do the exercises on paper BEFORE looking at the answers

BBC |
Functions Part 1 - Test Functions Part 2 - Test |

That Quizz | Domains and Range | |

That Quizz | Functions and Relations | |

That Quizz | Functions, Domain and Range | |

Mathopolis | Functions |

Exercises