how do I get rk to do anything?

• Subject: how do I get rk to do anything?
• From: Dan Solomon
• Date: Wed, 24 Jan 2007 12:02:55 -0500

I have prepared a 3 vector, dxdt, a function of x, and an initial  
vector (called init).  Then I issue

rk(dxdt,x,init,[t,0,.1,1.]);
and maxima responds by typing out

rk (the functional definition of dxdt, x, init, [t,0,.1,1.])

how do i get it to give me an answer?

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