How to make Maxima evaluate a curl?

• Subject: How to make Maxima evaluate a curl?
• From: Tommy Li
• Date: Mon, 22 Jan 2007 23:16:23 -0800

I'm trying to get Maxima to actually evaluate a curl.

I loaded the "vect" package, and here is the output:

(%i2) scalefactors([[x,y,z],x,y,z]);

(%o2)                                DONE
(%i3) A:[0,0,a*exp(-%i*beta*x)];

                                        - %I BETA x
(%o3)                       [0, 0, a %E           ]
(%i4) curl(A);

                                          - %I BETA x
(%o4)                    CURL [0, 0, a %E           ]

So after I take the curl, the output has the curl as an operator. How do 
I get it to actually evaluate the curl?

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