Directional Derivative

[salvomic]

(01-29-2015 06:57 PM)Han Wrote:  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]");

I'll try, thank you Han!