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Simplifying a(x) = cos(2x) Multiply a * x ax = cos(2x) Remove parenthesis around (2x) ax = cos * 2x Reorder the terms for easier multiplication: ax = 2cos * x Multiply cos * x ax = 2cosx Solving ax = 2cosx Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Divide each side by 'x'. a = 2cos Simplifying a = 2cos
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