Polymath 6.1 ODE question about error 6?

Blanche

New member
I am trying to solve this system of ODE's.

t(0) = .0001
t(f) = 500
d(y) / d(t) = 004*x*y-.04*y
y(0) = 200
d(x) / d(t) = .02*x-.00004/(t*y)
x(0) = 500

I get an error of "Internal Error trapped (6)"

What does this mean? How do I fix it? I'm using RFK45. I've never used the program before, so I'm pretty clueless.

Any help would be amazing. Thanks!!
 
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