# How to use *Finite-difference* in a sentence

finite-difference

Even where u is an explicit function of x, so that f x udx may be expressed in terms of x, it is often more convenient, for construction of a table of values of such an integral, to use finite-difference formulae.

These are automatically computed by

**finite difference**approximation (either forward or central differences ).We use 2D finite-difference modeling methods to compute the propagation of seismic waves in simplified volcanic structures.

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