FunctionInterpolation

FunctionInterpolation[expr, {x, xmin, xmax}]
evaluates expr with x running from to and constructs an InterpolatingFunction object which represents an approximate function corresponding to the result.

FunctionInterpolation[expr, {x, xmin, xmax}, {y, ymin, ymax}, ...]
constructs an InterpolatingFunction object with several arguments.

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Basic Examples (1)Basic Examples (1)

Computes an InterpolatingFunction representation of Exp[-Sin[x]^2]:

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Use the resulting function as any function:

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