6.4 Notes Graphing trigonometric functions transformationally: changes to coefficient B.

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Presentation transcript:

6.4 Notes Graphing trigonometric functions transformationally: changes to coefficient B

Period Transformations To make a change to the period of the graph of a trigonometric function, modify the coefficient of the angle variable, B, of the trigonometric equation.

Period Transformations  If the absolute value of the coefficient of the angle variable B is greater than one, the period of the trigonometric function will be less than the period of that function’s parent graph.  So will have a period of less than 360° or 2 .

Period Transformations  If the absolute value of the coefficient of the angle variable B is less than one, the period of the trigonometric function will be greater than the period that function’s parent graph.  So will have a period of more than 180° or .

Period Transformations Graph the pair of functions on the same graph using conventional graphing techniques. Graphing the parent function is NOT required.

Period Transformations  Example 1:

Period Transformations  Example 2: