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Description
The aims of this programme are to explain the ideas of function, domain and codomain, and to show how two functions can be composed to form a single function.
Metadata describing this Open University video programme
Module code and title: M101, Mathematics: a foundation course
Item code: M101; 04
First transmission date: 05-03-1978
Published: 1978
Rights Statement:
Restrictions on use:
Duration: 00:24:24
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Producer: David Saunders
Contributors: Roger Duke; Norman Gowar
Publisher: BBC Open University
Keyword(s): Centigrade; Codomain; Domain; Fahrenheit; Function; Weight
Footage description: Norman Gowar introduces the programme and gives several examples of functions as used in everyday life. He uses the cost of sending letters, the height of a point when rotated through an angle, and the conversion of degrees Fahrenheit to degrees Centigrade. Roger Duke expands the idea of function to include the concept of it being a process the raw materials of which are called 'domain', the end product of which is called the 'Co domain'. Roger Duke now takes a closer look at the function for temperature conversions which can be expressed as t -- 5/9 (t-32). He then shows how this function can be depicted on a graph, as can the other functions for example the sine-finction. Norman Gowar explains how functions can be seen as objects in themselves, which can be manipulated. He then shows how functions can be combined to generate composite function. Credits.
Master spool number: 6HT/72335
Production number: 00525_4241
Videofinder number: 2451
Available to public: no