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Der
Syntax
Der(F,X:INDET):POLY
where F is a polynomial or a rational function.
Summary
the derivative of a rational function
Description
This function returns the derivative of F with respect to the
indeterminate X.
example
Use R ::= Q[x,y];
Der(xy^2,x);
y^2
-------------------------------
Define Jac(F) --> The Jacobian matrix for a polynomial.
Return Mat([[Der(F,X) | X In Indets()]]);
EndDefine;
Jac(xy^2);
Mat[
[y^2, 2xy]
]
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Der(x/(x+y),x);
y/(x^2 + 2xy + y^2)
-------------------------------
See Also