Directional Derivative

[Han]

(01-29-2015 04:36 PM)salvomic Wrote:  There is a way to have the function listed in the Toolbox -> User?

Thank you :-)

salvo

Make a non-CAS wrapper.

DDER(f,v)
BEGIN
derivdir(f,v);
END;

Since DDER is a non-CAS program, you would then have to enter your arguments as strings:

DDER("x^2*y+z","[3,4,1]");