when writing by error the following

restart;
f:=proc()
dsolve(diff(y(x),x)+y(x)=0,y(x));
end proc();

Maple did not complain and returned  f := y(x) = _C1*exp(-x)

Then I noticed I needed to change "end proc();" to "end proc;" 

The question is, why did Maple not generate a syntax error? If "end proc();" is valid Maple code, then what does it mean? or Did Maple ignore it? what is the parsing steps used to make Maple generate the above output? 

Maple 2016.

Why does

int(sqrt(c+d*tan(e+f*x))*(a+b*tan(e+f*x))^(5/2),x);

Causes mserver.exe to hang into a loop at full CPU and maple hangs?

Windows 7, 64 bit.  Even using timelimit() on it, it still hangs exceeding the time limit and never return. I have to kill mserver.exe or exit Maple to recover.

I noticed that Maple 2016 did not add entry in the start menu->All programs, after installing it on window 7, as all the other Maple releases did.  I looked everywhere and do not see it. This is very strange. Only time I had problem like this, where I install Maple but it does not show up in the start menu.

I did not have problem installing 2016, and I can use it fine.  But each time I need to start it now, I have to do start menu->Search and type Maple 2016, to find Maple 2016.

Is there a way to make it show in the start menu? Should I uninstall it and install again? Any one else had this problem on windows?

Using Maple 2016, windows 7, 64 bit. I see 2 problems allready. One is that long display do not wrap around as it does with Maple 2015. Second problem, I see strange characters inside the numbers displayed on the screen.  Here is 2 screens shots, same computation, one from Maple 2015 and one from Maple 2016. Both on same PC. Windows 7.

Notice also the result for 2016 do not wrap. I had to scroll to the right to see the full result.

Here is the code in plain text. Can someone verify if they get the same problem on Maple 2016?

V:=(m,n)->binomial(m-floor(1/2*(n+1)),m-n)+binomial(m-floor(1/2*(n+2)),m-n);
r:=V(2000,500):
r:=r/10^6:
r:=r/(60*60*24*365);

Should restart always be in separate execution group? I noticed when I write something like

>restart;
  foo:=proc()
  local sys;
  with(DynamicSystems):
  sys := TransferFunction(25/(s^2+4*s+25)):
  print(ResponsePlot(sys, Step(),duration=4));
end proc;
>

then type foo(); in the next execution group, it does not work. The plot is not generated. No matter how many times I evaluate the execution group. The proc() does not seem to be fully defined. But if I do this:

>restart;  #hit return
>foo:=proc()
  local sys;
  with(DynamicSystems):
  sys := TransferFunction(25/(s^2+4*s+25)):
  print(ResponsePlot(sys, Step(),duration=4));
end proc;
>#hit another return

and now calling foo(); then it works, and the proc() returns the plot. Only difference is that restart was in separate group. But also I had to call foo() once, then evaluate the execution group where foo() is defined two times ! for it to work (why two times?) why one time did not work? is it becuase I am loading package inside the proc()?

What are the rules for putting the restart() call? Should it always be in separate group? I put it in the same group, so that I do not have to hit return 2 times, being a lazy person. But it seems to cause problem sometimes.

And related question, why did I have to hit return 2 times in the execution group to have proc() work in the second case above?