Product of Two Sinusoids Problem: Figure 5-4n shows the graphs of y1 = 6 sin and y2 =

Chapter 5, Problem 1

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Product of Two Sinusoids Problem: Figure 5-4n shows the graphs of y1 = 6 sin and y2 = cos 6 a. Which graph corresponds to which b. Without using your grapher, sketch on a copy of Figure 5-4n the graph of y = 6 sin cos 6 c. On your grapher, plot the graph of y3 = y1 y2. Use a window with a range for x Section 5-4: Composition of Ordinates and Harmonic Analysis 2003 Key Curriculum Press 195 of at least [0, 360] and an appropriate range for y. How closely does your composed graph in part b resemble the actual graph on your grapher? d. The graph of y = A cos 6 is a sinusoid with a fixed amplitude A. How would you describe the graph of y = 6 sin cos 6 ? The Tacoma Narrows Bridge in Tacoma, Washington, collapsed on November 7, 1940, due to wind which caused vibrations of increasing amplitude.

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