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Question: Error in DEplot

Question:Error in DEplot

ComputerUser 535 Maple
deplot
September 03 2015
0

eq1 := a(t)*(diff(a(t), t))+a(t)*(diff(a(t), t))*b(t)*(diff(b(t), t))*c(t)*(diff(c(t), t));
eq2 := a(t)*(diff(a(t), t))+a(t)*(diff(a(t), t))*c(t)*(diff(c(t), t))+a(t)*(diff(a(t), t))*b(t)*(diff(b(t), t))*c(t)*(diff(c(t), t));

DEplot({eq1, eq2}, [b(t), c(t)], t = 0 .. 1, b = 0 .. 1, c = 0 .. 1, [[b(0) = 1, c(0) = 1]], arrows = large);

Error, (in DEtools/DEplot/CheckDE) only derivatives of dependent variables can be present

DEplot({eq1 = 3*t^2, eq2 = 2*t^3}, [b(t), c(t)], t = 0 .. 1, b = 0 .. 1, c = 0 .. 1, [[b(0) = 1, c(0) = 1]], arrows = large);
Error, (in DEtools/DEplot/CheckDE) only derivatives of dependent variables can be present
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