GND:

Path: Common/Control

% Compute the frequency response given a numerator/denominator pair.

   y(s) = num(s)*u(s)/den(s)

   G(s) = num(s)/den(s)

 This is a multi-output, single-input system. Each column will give the
 value for G(s) for that frequency.
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   Form:
   [g,nu,w] = GND(num,den,w)
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   ------
   Inputs
   ------
   num                 Transfer function numerator(s)
   den                 Transfer function denomenator(s)
   w                   Frequency vector

   -------
   Outputs
   -------
   g                   Frequency response matrix
   nu                  Number of inputs
   w                   Frequency vector

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   References:	Laub, A., "Efficient Multivariable Frequency Response
               Computations," IEEE Transactions on Automatic Control,
               Vol. AC-26, No. 2, April 1981, pp. 407-408.
               Maciejowski, J. M., Multivariable Feedback Design, 
               Addison-Wesley, Reading, MA, 1989, pp. 368-370.
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Children:

Common: Control/GSS
Common: Control/ND2SS
Common: Control/WPZ

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