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Sum-to-Product Identity Exploration

Follow the steps below:  (To graph, input the functions in the input bar) 1. Graph f(x)=sin(3x) and g(x)=sin(x)     Compare/contrast the two graphs in terms of their frequencies. 2. Graph h(x)=sin(3x)+sin(x).     What can you conclude on the sum of the two frequencies based on their illustrations? 3. Graph p(x)=2sin(2x)cos(x)     Compare/contrast the graphs of h(x) and p(x).