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The term non-linear or nonlinear has several definitions but is generally used to describe a system that cannot be approximated by a superposition principle or perturbative approach.

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What does the term 'hyperbolic model' mean?

Example of a hyperbolic system, the first order wave equation: $ {\partial \underline{U} \over \partial t} + \underline{A} {\partial \underline{U} \over \partial x} = 0$ The term hyperbolic means tha …
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