@Alejandro Jakubi I asked a similar question some time ago:

http://www.mapleprimes.com/posts/97384-Notified-3-Times-Each-Time

@alex_01 Knowing nothing about what you are trying to do, I tried doing

eval(ob,{x[1]=0,x[2]=0,x[3]=0});

which results in  0.8571428571/x[4], which means that with the constraint con1 you can make this as small (and negative) as you like.

Did you leave something out?

@alex_01 Knowing nothing about what you are trying to do, I tried doing

eval(ob,{x[1]=0,x[2]=0,x[3]=0});

which results in  0.8571428571/x[4], which means that with the constraint con1 you can make this as small (and negative) as you like.

Did you leave something out?

This seems to be a known problem. It is apparently not easy to fix, or it would have been done a long time ago.

In the help page for solvefor we read:

Important: The solvefor command has been deprecated.  Use the superseding command solve instead.

In the help page for solvefor we read:

Important: The solvefor command has been deprecated.  Use the superseding command solve instead.

A Google search led to

http://www.mapleprimes.com/questions/36748-Maplesofts-Direction-After-Take-Over

and

http://www.walkingrandomly.com/?p=1563

A Google search led to

http://www.mapleprimes.com/questions/36748-Maplesofts-Direction-After-Take-Over

and

http://www.walkingrandomly.com/?p=1563

@Wang Gaoteng

with(plots):
equ := 2+(s+1)*exp(tau*s) = 0;
res0:=solve(equ,s);
complexplot(res0,tau=0..3,thickness=3);
#res0 leaves the real axis at
solve(-2*tau*exp(tau)=-exp(-1),tau);
evalf(%);
animate(complexplot,[res0,tau=0..T,thickness=3],T=0.15..0.16);
#Animating in a different interval to examine the crossing with the imaginary axis:
animate(complexplot,[res0,tau=1.15..T,thickness=3],T=1.15..1.25);
#Numerical solution:
tf:=fsolve(Re(res0)=0,tau=1.125);
eval(res0,tau=tf);
identify(%);
#The exact crossing may be at that value and happens when tau has the value:
solve(res0=I*sqrt(3),tau);
te:=evalc(%);
evalf(te);
#Checking:
eval(res0-I*sqrt(3),tau=te);
simplify(%);
evalf(%);

@Wang Gaoteng

with(plots):
equ := 2+(s+1)*exp(tau*s) = 0;
res0:=solve(equ,s);
complexplot(res0,tau=0..3,thickness=3);
#res0 leaves the real axis at
solve(-2*tau*exp(tau)=-exp(-1),tau);
evalf(%);
animate(complexplot,[res0,tau=0..T,thickness=3],T=0.15..0.16);
#Animating in a different interval to examine the crossing with the imaginary axis:
animate(complexplot,[res0,tau=1.15..T,thickness=3],T=1.15..1.25);
#Numerical solution:
tf:=fsolve(Re(res0)=0,tau=1.125);
eval(res0,tau=tf);
identify(%);
#The exact crossing may be at that value and happens when tau has the value:
solve(res0=I*sqrt(3),tau);
te:=evalc(%);
evalf(te);
#Checking:
eval(res0-I*sqrt(3),tau=te);
simplify(%);
evalf(%);

I use animations quite a lot. The ones in the following link were used on the web site's front page one semester. To be honest, I don't think they were appreciated, but I had fun.

The minimal descriptions in the following are in Danish, but the code is provided.

On the web page in the link you click on "Gamle forsideopgaver og illustrationer".

A few are not animations but were also supposed to be appetizers.

http://alsholm.dk/Kurser/01007/index.php?id=10027

Without looking too closely at what you are doing setoptions3d does seem to me to work.

Why do you have both of 'axes = NONE' and 'axes = NORMAL' in several  commands?

Without dealing with the issue I noticed that you have 'pi'. If the mathematical constant of that name is intended, then it is Pi.

I tried using Firefox and Chrome. No problem after doing what you described.

Standard Worksheet Interface, Maple 14.01, Windows Vista, October 15 2010 Build ID 535952

@tayyab You will find both explained in the help:

?dsolve,numeric,bvp