: any of a breed of very small roundheaded dogs that occur in short-coated and long-coated varieties.See Chihuahua defined for English-language learners. See Chihuahua defined for kids. ADVERTISEMENT. any of a breed of very small roundheaded dogs that occur in short-coated and long-coated varieties. See Chihuahua defined for English-language learners. See Chihuahua defined for kids. ADVERTISEMENT.
3) Critically damped: [math]x(t) = (A + Bt)e^{- \gamma t}[/math] This is the optimally damped case, where the damping coefficient is just large enough to completely quell the oscillations, so the oscillator returns to zero in the least amount of time possible. 4) Overdamped: [math]x(t) = Ae^{- \gamma_{1}t} + Be^{- \gamma_{2}t}[/math]
Linear damping occurs when a potentially oscillatory variable is damped by an influence that opposes changes in it, in direct proportion to the instantaneous rate of change, velocity or time derivative, of the variable itself.