The Algebra of Functions

Combining functions can be as easy as 1 + 1 = 2. Pupils learn to determine the value of f + g, f - g, fg, or f/g for given functions and given input values. They watch a video that shows how to evaluate each function separately using a graphing calculator and then perform the indicated operation.

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CCSS: Adaptable
Instructional Ideas

  • Pause the video at appropriate times to have the class try the problems
Classroom Considerations

  • Knowledge of evaluating functions for given values is necessary
  • Video uses a TI-84 calculator; scholars should be able to use their own calculators to produce a table of values

  • Uses different representations of functions
  • Thorough explanations are clear and easy to understand

  • None
Common Core