jacobian -- the Jacobian of a list of polynomials |
Syntax |
jacobian(L: LIST of RINGELEM): MAT jacobian(L: LIST of RINGELEM, X: LIST of indets): MAT |
Description |
Example |
/**/ use R ::= QQ[x,y]; /**/ L := [x-y, x^2-y, x^3-y^2]; /**/ jacobian(L); matrix( /*RingWithID(26, "QQ[x,y]")*/ [[1, -1], [2*x, -1], [3*x^2, -2*y]]) /**/ jacobian(L,[y]); matrix( /*RingWithID(26, "QQ[x,y]")*/ [[-1], [-1], [-2*y]]) |