# Polynomial and Interpolation Functions

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    Polynomials
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    conv         Multiply polynomials.
    deconv       Divide polynomials.
    poly         Construct polynomial with specified roots.
    polyder      Differentiate polynomial.
    polyeig      Solve polynomial eigenvalue problem.
    polyfit      Fit polynomial to data.
    polyval      Evaluate polynomial.
    polyvalm     Evaluate polynomial with matrix argument.
    residue      Partial-fraction expansion (residues).
    roots        Find polynomial roots.
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    Data Interpolation
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    griddata     Data gridding.
    interp1      One-dimensional interpolation (1-D table lookup).
    interp2      Two-dimensional interpolation (2-D table lookup).
    interpft     One-dimensional interpolation using FFT method.
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(c) Copyright 1994 by The MathWorks, Inc.