http://www.ck12.org Chapter 5. Trigonometric Functions
Plotting these 5 points first is an essential step to sketching an approximate curve.
- The new function is reflected across thexaxis and vertically stretched by a factor of 3.
Practice
- Explain how to find the amplitude of a sinusoidal function from its equation.
- Explain how to find the amplitude of a sinusoidal function from its graph.
Find the amplitude of each of the following functions.
3.g(x) =−5 cosx