Question: Explain each term in this equation and show that x(t) = e t cos(t) is a solution. The spring we studied had no friction. Friction

Explain each term in this equation and show that x(t) = e^–t cos(t) is a solution.

The spring we studied had no friction. Friction acts as a force much like the spring itself, but is proportional to velocity rather than displacement. One possible equation describing this is

d'x dx dr? -2x - 2 dt

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