Задача 40277.

The material point is involved in two oscillations occurring along one straight line and expressed by the equations x1 = cos t; x2 = 2cos t (offset in centimeters, time in seconds). Find the amplitude A of the resulting oscillation, its frequency and the initial phase. Write the equation of motion.

A detailed solution with a brief record of the conditions, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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