AIM Chat with Phil Huling .
9:56 AM
hi
hi
Susan Wildstrom has joined this chat.
everyone who can, from A-M last name, try to connect to vnc with 165.134.13.229:5901
Any old hands at maple can answer this: In the worksheets I looked at from yesterday, the separator symbol is usually ";" but sometimes ":". Why?
: does not show output
the : doesn't give you output, just runs
vnc up
the ; displays an output for you.
If the command ends with ; output is visible
useful to suppress the output of plots that actually you will combine in Display
If input ends with: output is hidden
David Burton has joined this chat.
what about end of alphabet folk?
what about end of alphabet folk?
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I have vnc up (f last name, if that matters)
ah, cool.
And I spent some time trying to figure out how to make ONE POINT show up on the 3D graphs - say the "point of interest" when doing tangent planes. I think i can kludge it -- but HELP didn't give me any easy way. What do you do?
Lakshmi Mukundan has joined this chat.
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If you are M-Z try VNC artsciqt1.slu.edu:5901
10:00 AM
tHAT WORKS
vnc was up but now is covered with what look like Excel spreadsheets instead
I'm on 5901 also, with last name Craft. I don't think my firewall will let me to another but if you want me to I'll try.
that's good
if you have to connect to the old vnc server, that's fine
fontesnc@westminster.edu has joined this chat.
ontesnc@westminster.edu has joined this chat.
good to see my email highlighted in the spreadsheet
mike is updating the chat names over there
stand by
On the worksheet "plotting with Maple" for Exercise 12 I got theta=63, phi=-157 for the angles. Does that look good?
is that the tangent plane one?
Yes
ok, if you have the tan plane side on, then you;re good
Thanks!
Hi NCC folk!
I hear russell, see mike
sound is fine for me
all set here
good here too
10:05 AM
any resolution on the licensing issue for maple 11?
maple 11?
In Quicktime video I see only a symbol ant your faces
not your faces
Mike sent an email concerning the Linux issue. Thanks
And I spent some time trying to figure out how to make ONE POINT show up on the 3D graphs - say the "point of interest" when doing tangent planes. I think i can kludge it -- but HELP didn't give me any easy way. What do you do?
my issue was with windows not linux
the QT symbol?
who me?
yes
try restarting quicktime and reconnecting
all is working for me
Which VNC address should we use?
165.134.13.229 for vnc
thanks
David Schmitz also needs a chat invite
David Schmitz has joined this chat.
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I restrat quictime, still I see Qt symbol only
what address are you trying to connect to?
is there a way to plot this over a round domain?
because students get confused by the corners on the plot
do you mean transparent - like seeing "through" the surface?
will you give me url for QT?
10:10 AM
WE LOST you maple screen.. seeing Vine server screen...
sarah, that would best be done by defining the graph in polar coordinates
No maple
rtsp://165.134.240.35/mvc070626.sdp
whoops
yep, last name R doesn't have vnc now
sorry, mvc070626am.sdp
I left out the am
can you specify a domain as a set?
You're back
165.134.13.229 for vnc
vnc is back
if you can get into 165.134.13.229, feel free to do so
if you cannot get onto to that server, please continue to use the old one
artsciqt1.slu.edu:5901 or display 1
Sarah, The other way to get the circular domain would be to use the view option
Now i got the quicktime video
VNC screen hasn't changed in awhile... 5901
good
view option?
VNC isn't updating
here, a-m vnc is working, n-z vnc isn't updating
Peggy, try 165.134.13.229 for vnc
view=low..high after x & y ranges
so the difference between the last two inputs is that "filled=true" gives the surface?
Peggy, still display 1 password MAPLE
yes, please try switching over to 165.134.13.229 if you are having problems for VNC
10:15 AM
i cannot connect to the alternate vnc server
but this one is slowly updating so it is ok
165.134.13.229 wouldn't connect
try :5901 at the end of it
Now 5901 is fine. Maybe I just have to deconnect/reconnect when freezes...
oh... I'll try that next time.
no, actually it worked
it needed the :5901
The other detail we found is that a machine here would only connect using the display option without the :5901
my favorite!

We're playing switch the AIM names again
Today Mike is the instructor machine
if you are on artsciqt1.slu.edu for VNC, and it freezes, please let us know, the problem is on the server, and it gets frozedn
Russell is the side machine
frozen
so vectors are always column vectors?
VNC frozen
Mine is frozen
by default, yes
Mine too
i'm on 165.134.13.229:5901 now. good so far
you are all connected to artsci?
does "with(LinearAlgebra);" work the same?
no the new one
165.134.13.229:5901
thanks!
OK, we're getting good updates
10:20 AM
I quit and restarted and it worked.
ok
but not ideal
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Excellent!
the vnc is working way way better on the new server
John try the address 165.134.13.229:5901
This is great stuff - whoo whoo!
so no package is necessary to use . for dot product, but you have to load a package to use cross product
sorry -- forgot question mark?
for vnc
gotcha
My operations are not symplifying
10:25 AM
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What is not simplifying?
The cross products it just types it out
What's the reason for using the arrow to define functions rather than just h(x,y)=...?
alternate notation I think, there's nothing wrong with h(x,y):=something
but you need the ":="
If you do that, it asks you to clarify whether you are actually defining a function.
But you can't evaluate h, correct?
So it's really just f(x)=... versus y=...
10:30 AM
Correct
you need the arrow if you want to do function operations like derivatives and integrals
OK
Well, typing h(1,2) doesn't do it.
otherwise it thinks f is a variable
eval(h) gives interesting result!!!
but if you define it as h(x,y), then h(1,2) makes sense if you choose that function definition option
partial derivs as you defined are expressions and not functions?
10:35 AM
DOES THAT LAST LINE *DO* ANYTHING? OR JUST FOR SHOW?
and if they were NOT equal?
would it complain? I'll try that...
interesting.... 4=7 is ok! So relaly just for show...
that's the key: no assignment. Evaluation of each side, then just "=" as equation. Got it.
You must have missed the DFY
1 does not equal 2, not even for large values of 1
Who is that credited to?
in 2d mode
They make that mistake constantly
10:40 AM
vertical line comes with evalf, right?
also just "eval"
there it is - at bottom of expression menu
i see, thank s
10:45 AM
Linda Gao went offline before accepting your invitation.
can we make the polar graph time delayed so we can see the direction the curve is being drawn
This is where the graphing calculator may be a good extra support
Can you shade regions in graphs?
10:50 AM
maple has a default coordinate for z as a function of r and theta, i think it is cylindrical_alt or something similar
I have lost the sound, reloaded QT and now don't even have the picture.
you had it before?
anyone else with QT issues?
Yup, then lost sound, so closed QT to try to get it all back.
double check the address.... rtsp://165.134.240.35/mvc070626am.sdp
I'm up again.
great
k, good
This could be the logo for the MVC T-shirt 
10:55 AM
I missed the trans command
This is good!
transparency=
in the plot command
thank you
yw
you're welcome
lol
what's russell's age?
47, I heard
hee hee
ap reading rumors...
or truth!
erf! I love it!
11:00 AM
wow, that's really nice
11:05 AM
What is od?
end of the 'do'statement
od is do backwards.
You can also use end do
This shows that the code is old since the preferred end of do went to end do about 3 versions ago.
this is a really nice visualization, thanks!
How did you get the integral notation in text mode?
Pallette?
can it be done without the palette? I despise the palette
perhaps I'm showing my age lol
11:10 AM
ok thanks
I also prefer shortcuts, being a touch typist, but sometimes ya just gotta click...
too sad...
Is there not a plot option involving shading?
do your students type in the Maple code or is this used for class explanations only?
cut and paste I assume
If you want to shade the area between two curves, etc, there are things in the Student(Calculus) package that will do that.
I've also seen a macro for doing that, if you google search
so could we go ahead and actually EVALUATE these integrals?
i tried copy/paste from print but didn't work...
11:15 AM
ah - lost a ) ... got it
Can you select and use right mouse to get a context menu also?
cute...
what exactly does "implicitplot" mean?
11:20 AM
okay, that makes sense, especially that vertical line example
is 'theta' the standard name for that parameter?
is it possible to draw on the graph in maple 11 to manually shade the correct region?
sweet! get me maple 11 right away 
too bad there's no "fill with paint" can...
Wait for Maple 12
Use the line drawer to make the radial lines. Neater
11:25 AM
How easily will this code work for a different problem? i.e. can kids just treat this like a template? I guess it would have to be the same "flavor"...
I MUST get 11
so as long as it's "radial from one curve to another between angles" type... got it. Would be fun to use code on a problem that isn't of the "right" type...
11:30 AM
very nice stuff -- great visualizations!
thanks!
see you later
Do you address different radii?
before you all leave
I want to rethink my topic! later
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who was still on the old server for vnc
ok thanks
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I was one o fthe holdouts on the old server, but the new one worked.
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Thank you...new server for me
as long as port is 5901, my firewall is happy.
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I'm not sure but I think I was on the old one.
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11:40 AM
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