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Find the smallest positive -intercepts of the graph of
y = cos (12x) + cos(16x) + cos(20x)
and list them in increasing order.
Submit your answer as a list of x-coordinates from least to greatest.

 Oct 20, 2022
 #1
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The solutions are pi/20, pi/10, 3*pi/5

 Oct 20, 2022

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