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trisolve

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.

Examples



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

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