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Scilab help >> Elementary Functions > Symbolic > trisolve

trisolve

symbolic linear system solver

Calling Sequence

`[x [,sexp]] = trisolve(A,b [,sexp])`

Arguments

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 — symbolic triangularization
• solve — symbolic linear system solver

Authors

F.D, S.S

 << trianfml Symbolic Trigonometry >>

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