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Lag1989 task №7.18
The resulting oscillation of a point participating in two oscillations of the same direction is described by the expression x=A·cos2,1t·cos80t. Find the beat period τ and the cyclic frequencies ω₁ and ω₂ of the added oscillations.
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Discount for regular customers! If the total of your purchases from the seller
Timur_ed
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