| | | Scilab Reference Manual | |
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poly — polynomial definition
[p]=poly(a,"x", ["flag"])
| a | : matrix or real number |
| x | : symbolic variable |
| "flag" | : string ("roots", "coeff"), default value is "roots". |
If a is a matrix, p is the characteristic polynomial i.e. determinant(x*eye()-a), x being the symbolic variable.
If v is a vector, poly(v,"x",["roots"]) is the polynomial with roots the entries of v and "x" as formal variable. (In this case, roots and poly are inverse functions).
poly(v,"x","coeff") creates the polynomial with symbol "x" and with coefficients the entries of v (v(1) is the constant term of the polynomial). (Here poly and coeff are inverse functions).
s=poly(0,"s") is the seed for defining polynomials with symbol "s".
s=poly(0,"s");p=1+s+2*s^2; A=rand(2,2);poly(A,"x")
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