Question: 25.18 The following is an initial value, second-order differential equation: d'x dx + (5x) + + (x +7) sin(wt) = 0 dr? dt where

25.18 The following is an initial value, second-order differential equation: d'x dx

25.18 The following is an initial value, second-order differential equation: d'x dx + (5x) + + (x +7) sin(wt) = 0 dr? dt where dx (0) = 1.5 and x(0) = 6 dt Note that w = 1. Decompose the equation into two first-order dif- ferential equations. After the decomposition, solve the system from t = 0 to 15 and plot the results.

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