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Example of Trig Equation

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Published on Feb 18, 2011

Precalculus: Find all solutions to the trig equation [sin(4x)]^3 - 4sin(4x) = 0 for x in [0, 2pi). First we solve y^3 - 4y = 0. Those solutions yield the equations sin(4x) = 0, +2, -2, which we then solve.

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