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FunctionInterpolation

FunctionInterpolation
evaluates expr with x running from to and constructs an InterpolatingFunction object which represents an approximate function corresponding to the result.
FunctionInterpolation
constructs an InterpolatingFunction object with several arguments.
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Basic Examples   (1)
Computes an InterpolatingFunction representation of Exp[-Sin[x]^2]:
Use the resulting function as any function:
Computes an InterpolatingFunction representation of Exp[-Sin[x]^2]:
In[1]:=
Click for copyable input
Out[1]=
Use the resulting function as any function:
In[2]:=
Click for copyable input
Out[2]=
Scope   (1)
Use derivatives to improve the smoothness of the approximation:
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