Acer has been a great help but, the software should be able to understand what's in most textbooks. I have a textbook that has Maple code in it and I still have to fiddle with the code to make it work. Not to mention my professor is expecting us to learn from that textbook so when something doesn't work he automatically assumes we did something wrong and we're not putting in an effort.

Acer has been a great help but, the software should be able to understand what's in most textbooks. I have a textbook that has Maple code in it and I still have to fiddle with the code to make it work. Not to mention my professor is expecting us to learn from that textbook so when something doesn't work he automatically assumes we did something wrong and we're not putting in an effort.

I entered the code you posted and it didn't work so I removed the index from the right side of the equation and now it works. It returned x2(t)=tA.x+t^2, x1(t)=tA.x+t^2+1}. Thank you very much for your help. I really appreciate it.

I entered the code you posted and it didn't work so I removed the index from the right side of the equation and now it works. It returned x2(t)=tA.x+t^2, x1(t)=tA.x+t^2+1}. Thank you very much for your help. I really appreciate it.

It makes sense because before I started my original equation, I was thinking down the path of what you did but didn't know how to get there. My professor took the example from the maple help file, put it in a presentation and called that teaching. The next part of the problem is to plot x1(t) for t=1..10. Since the solution is the same for all t's, that's not going to be much of a plot.

It makes sense because before I started my original equation, I was thinking down the path of what you did but didn't know how to get there. My professor took the example from the maple help file, put it in a presentation and called that teaching. The next part of the problem is to plot x1(t) for t=1..10. Since the solution is the same for all t's, that's not going to be much of a plot.

I'm not sure what your asking when you say "something more interesting, like say Matrix([[-1,0],[-1,-2]])"? I also don't understand how your code has a Y(t) in it. I'm completely confused with your answer.

I'm not sure what your asking when you say "something more interesting, like say Matrix([[-1,0],[-1,-2]])"? I also don't understand how your code has a Y(t) in it. I'm completely confused with your answer.

when tried the code in a new worksheet it works, but I can't plot both of them together. It only works right after the DEplot command, then it plots the function? I don't understand maple enough to know why it's working this way. Can someone explain?

when tried the code in a new worksheet it works, but I can't plot both of them together. It only works right after the DEplot command, then it plots the function? I don't understand maple enough to know why it's working this way. Can someone explain?

I tried what you said but, when I attempt to plot it using: with(plots); a := 2*ln(2); b := 1/5*ln(2); dose := proc (t) options operator, arrow; sum(2*Heaviside(t-6*n)-2*Heaviside(t-6*n-1/2), n = 0 .. 10) end proc; J := DEplot([diff(x(t), t) = dose(t)-a*x(t), diff(y(t), t) = a*x(t)-b*y(t)], [x, y], 0 .. 50, {[0, 0, 0]}, stepsize = .5, scene = ([t, x])); K := DEplot([diff(x(t), t) = dose(t)-a*x(t), diff(y(t), t) = a*x(t)-b*y(t)], [x, y], 0 .. 50, {[0, 0, 0]}, stepsize = .5, scene = ([t, y])); plot[display]({J, K}); I get an error at the end saying i have an empty plot. I hope I pasted in correctly, last time I used the code control. This is all the code I have so far.

I tried what you said but, when I attempt to plot it using: with(plots); a := 2*ln(2); b := 1/5*ln(2); dose := proc (t) options operator, arrow; sum(2*Heaviside(t-6*n)-2*Heaviside(t-6*n-1/2), n = 0 .. 10) end proc; J := DEplot([diff(x(t), t) = dose(t)-a*x(t), diff(y(t), t) = a*x(t)-b*y(t)], [x, y], 0 .. 50, {[0, 0, 0]}, stepsize = .5, scene = ([t, x])); K := DEplot([diff(x(t), t) = dose(t)-a*x(t), diff(y(t), t) = a*x(t)-b*y(t)], [x, y], 0 .. 50, {[0, 0, 0]}, stepsize = .5, scene = ([t, y])); plot[display]({J, K}); I get an error at the end saying i have an empty plot. I hope I pasted in correctly, last time I used the code control. This is all the code I have so far.