File: tangent.cat

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scilab 2.6-4
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tangent           Scilab Group           Scilab Function            tangent
NAME
   tangent - linearization of a dynamical system at an equilibrium point 
  
CALLING SEQUENCE
 [f,g,newm]=tangent(ff,xe,[ue])
PARAMETERS
 ff   : a string which gives the name of the Scilab macro which  codes 
      the system 
      
 xe   : column vector which gives the equilibrium point for the value ue
      of the parameter
      
 ue   : real value.
      
 f, g : two matrices for the linearised  system  dxdot=f.dx + g.du
      
 newm : A new macro of type [y]=newm(t,x,u) which computes the field of
      the linearised system  (newm(t,xe,ue)=0)
      
DESCRIPTION
   linearises around the equilibrium point (xe,ue) the vector field of  the
  dynamical system given by a Scilab macro ff, xdot=ff(t,x,[u]). The
  dynamical system is supposed to be autonomous.