DEtools[DEplot](
MLV,[x(t),y(t)],
t=0..10,
ivs, 
arrows=smalltwo, 
dirfield=300, 
size=magnitude, 
color=magnitude
);

DEtools[DEplot](
MLV,[x(t),y(t)],
t=0..10,
ivs, 
arrows=smalltwo, 
dirfield=300, 
size=magnitude, 
color=magnitude
);

I agree with you jakubi, it would be a real pity if these options had been dropped. I'd been looking to do something just like that. As I'm often fiddling with differential equations, I'm always after tools to plot nice phase plots. Perhaps there is one of those secret commands to emulate them...

I agree with you jakubi, it would be a real pity if these options had been dropped. I'd been looking to do something just like that. As I'm often fiddling with differential equations, I'm always after tools to plot nice phase plots. Perhaps there is one of those secret commands to emulate them...

Thanks jakubi.

Again.

Well, I had noticed I could do that, indeed, but I was put off by the RTABLE structure, and thought there might be a more direct way to get:

MATRIX([[1, 0, 0], [0, 1, 0], [0, 0, 1]])

than by deleting the irrelant bits in:

RTABLE(150112496,MATRIX([[1, 0, 0], [0, 1, 0], [0, 0, 1]]),Matrix)

Thanks jakubi.

Again.

Well, I had noticed I could do that, indeed, but I was put off by the RTABLE structure, and thought there might be a more direct way to get:

MATRIX([[1, 0, 0], [0, 1, 0], [0, 0, 1]])

than by deleting the irrelant bits in:

RTABLE(150112496,MATRIX([[1, 0, 0], [0, 1, 0], [0, 0, 1]]),Matrix)

thanks Joe, thanks Mario, very useful:

eval(M, f = ((x,y) -> x+y))

thanks Joe, thanks Mario, very useful:

eval(M, f = ((x,y) -> x+y))

• Instillation of hope

In a mixed group that has members at various stages of development or recovery, a member can be inspired and encouraged by another member who has overcome the problems with which they are still struggling.

I liked this one, thanks for the link jakubi!

• Instillation of hope

In a mixed group that has members at various stages of development or recovery, a member can be inspired and encouraged by another member who has overcome the problems with which they are still struggling.

I liked this one, thanks for the link jakubi!

Thanks John for this precision, perfectly understandable.

Thanks John for this precision, perfectly understandable.

I hope my post did not come across as grumpy, jakubi, I was merely pointing out that there are differences in the syntax for solve and fsolve that do seem to make things unnecessarily complicated, rightly or wrongly I would expect the syntax of the two commands to be similar -- I mean I just think it would make it easier for anyone to learn Maple. I have no plan to write software -- it's hard enough to learn to use existing software!

I hope my post did not come across as grumpy, jakubi, I was merely pointing out that there are differences in the syntax for solve and fsolve that do seem to make things unnecessarily complicated, rightly or wrongly I would expect the syntax of the two commands to be similar -- I mean I just think it would make it easier for anyone to learn Maple. I have no plan to write software -- it's hard enough to learn to use existing software!

I'm okay with having the answer returned as a set, as you say Axel it is quite natural, but I do think op(%) is not a very friendly command for beginners (I'm not very comfortable with it myself at times, I do sometimes have to fiddle to get it right).