File: trisolve.cat

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trisolve(1)                    Scilab Function                    trisolve(1)
NAME
  trisolve - symbolic linear system solver

CALLING SEQUENCE
  [x [,sexp]] = trisolve(A,b [,sexp])

PARAMETERS

  A,b       : matrices of strings

DESCRIPTION
  symbolically solves A*x =b , A being assumed to be upper triangular.

  sexp is a vector of common subexpressions in A, b, x.

EXAMPLE
  A=['x','y';'0','z'];b=['0';'1'];
  w=trisolve(A,b)
  x=5;y=2;z=4;
  evstr(w)
  inv(evstr(A))*evstr(b)

SEE ALSO
  trianfml, solve

AUTHOR
  F.D, S.S