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COMPOSITION

COMPOSITION. OF. FUNCTIONS. “SUBSTITUTING ONE FUNCTION INTO ANOTHER”. The Composition Function. Must be able to work either. This is read “ f composition g ” and means to copy the f function down but where ever you see an x , substitute in the g function.

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COMPOSITION

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  1. COMPOSITION OF FUNCTIONS “SUBSTITUTING ONE FUNCTION INTO ANOTHER”

  2. The Composition Function Must be able to work either This is read “f composition g” and means to copy the f function down but where ever you see an x, substitute in the g function. FOIL first and then distribute the 2

  3. This is read “g composition f” and means to copy the g function down but where ever you see an x, substitute in the f function. You could multiply this out but since it’s to the 3rd power we won’t

  4. This is read “f composition f” and means to copy the f function down but where ever you see an x, substitute in the f function. (So sub the function into itself).

  5. A MathXTC Example of Composite Functions Try it !!

  6. Method 1

  7. Method 1

  8. Method 1

  9. Method 2

  10. Method 2

  11. Acknowledgement I wish to thank Shawna Haider from Salt Lake Community College, Utah USA for her hard work in creating this PowerPoint. www.slcc.edu Shawna has kindly given permission for this resource to be downloaded from www.mathxtc.com and for it to be modified to suit the Western Australian Mathematics Curriculum. Stephen Corcoran Head of Mathematics St Stephen’s School – Carramar www.ststephens.wa.edu.au

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