Linear linear, defined as the ratio of a linear relationship between the amount of volume, as can be understood in the mathematical first derivative of the function is a constant; nonlinear non-linear refers not to scale, not a linear relationship between the first derivative is not constant. If Q: Two eye visual acuity is an eye several times? It is easy to think twice, can actually be 6-10 times! This is non-linear. Laser is nonlinear! Chaotic motion of celestial bodies exist; electrical, optical and acoustic oscillations, chaos will suddenly trapped; earth's magnetic field at 400 million years, 16 mutations direction, but also due to the chaos. Even the man himself, they are actually nonlinear: contrary to conventional thinking, a healthy person's heart beat EEG and not the rule, but chaos, chaos is the vitality of the performance of the chaotic system response to external stimuli, faster than non-chaotic system.
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