## 9426 Reputation

12 years, 30 days

## odetest problem verifying same solution...

Give this

ode:=diff(y(x),x)=a*cos(y(x))+b;
sol_1:=2*arctan( (a+b)/sqrt(b^2-a^2) * tan(1/2*sqrt(b^2-a^2)*(x+_C1)));
sol_2:=2*arctan( sqrt(a+b)/sqrt(b-a) * tan(1/2*sqrt(b^2-a^2)*(x+_C1)));

sol_1 and sol_2 are the same. Only difference is that I wrote  (a+b)/sqrt(b^2-a^2) in one, and  sqrt(a+b)/sqrt(b-a) in the other. But these two expressions are the same. But odetest gives zero on the first and not on the second:

odetest(y(x)=sol_1,ode);
0

odetest(y(x)=sol_2,ode);
not zero

Why did Maple not verify sol_2?

Maple 2016.1 on windows 7

## How to increase font size for Maple debu...

Maple

Maple debugger uses very small font, different from main worksheet. It seems to use its own font size. Changing font size on the main worksheet has no effect.

For example, if you type

restart;
f:=proc()
return 3;
end proc;

stopat(f);

f();

Now the debugger comes up. On my system, windows 7, and Maple 2016, the font is very small. I'd like to make it larger.

How can one do this? I looked at format->style but see nothing related to debugger.

## why "end proc();" do not generate an err...

Maple

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?

## Problem with indefinite integral...

Maple

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.

## Maple 2016 on Windows 7...

Maple 2016

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?

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