Some basics of the algebra and the graphing of matrices: Create a new matrix via the Math menu. The ^2 means that the keyboard shortcut is Control-2. We get...
1718
Christopher Young
c56young
Feb 2, 2011 3:50 am
[Yahoo now completely strips photos out of their places, so if you want to see the original e-mail, let me know and I'll send it to you.] For seeing exactly...
1719
Christopher Young
c56young
Feb 2, 2011 4:03 am
Yahoo now completely strips photos out of their places, so if you want to see the original e-mail, let me know and I'll send it to you. Continuing with...
1720
Christopher Young
c56young
Feb 2, 2011 6:27 pm
A color-grid dragged in from a Google image search for "color grid": If we want to be a little more exact, we can custom-design a color-map, although this is...
1721
Christopher Young
c56young
Feb 2, 2011 8:02 pm
Images can be dragged directly onto the graph pane or onto any equation which plots something. A handy source is Google Images: When you hover over an image in...
1722
Christopher Young
c56young
Feb 2, 2011 8:39 pm
We can drag any text or equation from the equation pane onto the graphing pane! (Except not the right-hand "primed pane"). This is a quick way to label graphs....
1723
Christopher Young
c56young
Feb 4, 2011 4:14 am
Using GC windows as "desktops"; for importing equations from other windows (Some of the equations pictured in the last example only work in GC 4, soon to be...
1724
David Craig
dcraigx
Feb 4, 2011 3:25 pm
All- Since the power of visualization is being noted here, thanks once again to Chris' beautiful examples, I thought I'd drop another of my periodic...
1725
Steven Rubenstein
akaroy
Feb 4, 2011 6:12 pm
Any hope of doing anything in 4D with that, a la relativity? S. Rubenstein...
1726
arthur.lawrence@...
artplot101
Feb 24, 2011 5:21 am
Ladies and Gentlemen, What is it and what does it do? Play it for a visual experience....
1727
arthur.lawrence@...
artplot101
Feb 26, 2011 7:15 pm
Hi All, Maybe I got to much time on my hands-but why not have some fun. How many chimps can you see?...
1728
Geezer
n914tj
Mar 29, 2011 3:42 pm
A picture can be pasted to a sphere as in the attached file. In this case it's a picture of the Earth. I want the Earth to rotate slowly, west to east. (The...
1729
Geezer
n914tj
Mar 29, 2011 3:42 pm
I sent my last message without an attachment because I was expecting to be offered that option when I clicked on Send. Didn't happen. Now what do I do? ...
1730
Nico Bakker
ncmbakker
Mar 29, 2011 3:55 pm
Hi Geezer, Maybe you mean something like this file...? Sorry about the comments in Dutch, but you probably can figure out what they mean. Good luck, Nico....
1731
Geezer
n914tj
Mar 31, 2011 2:32 pm
I have over the years collected a substantial number of user-made files which I would like to store with the examples that came with GC. Can anybody tell me...
1732
Ron Avitzur
rxa31107
Mar 31, 2011 2:33 pm
Hello, Graphing Calculator 4.0 is now available at http://www.PacificT.com Best regards, Ron Avitzur...
1733
Ron Avitzur
rxa31107
Mar 31, 2011 2:42 pm
... On Mac OS X, the Examples folder is in the application bundle. Right-click or control-click on the Graphing Calculator application, and choose "Show...
1734
Detlef Lindenthal
detleflinden...
Mar 31, 2011 3:43 pm
Hello Ron, congratulations that you released GC 4.0 -- I just bought the parent's edition. My first sight was to see how colors are handled ... yes, colors are...
1735
Ron Avitzur
rxa31107
Apr 1, 2011 8:34 am
Hello, If any of you are on Facebook, the Graphing Calculator Facebook page is: http://www.facebook.com/GraphingCalculator Feel free to add GC pictures,...
1736
arthur.lawrence@...
artplot101
Apr 2, 2011 2:58 am
News Flash 4/1/2011 Astronauts wake up in operating room after space debri hit....
1737
Christopher Young
c56young
Apr 3, 2011 3:50 am
I got a question about how to illustrate the concept of linear independence, via making an interactive version of the following illustration. 1 I think it's a...
1738
Christopher Young
c56young
Apr 3, 2011 9:38 am
Below we see a sort of interactive algorithm for finding sets of multipliers , , and such that the vector sum will be equal the 2D zero vector [0 0] for a...
1739
Chris Young
c56young
Apr 3, 2011 9:02 pm
... Thanks, I'll use "zero vector" for this in the future. ... Absolutely. In fact, I think the idea of spanning vectors is really the crucial one, the more I...
1740
Chris Young
c56young
Apr 3, 2011 9:36 pm
Here, we're finding solution sets for the directions, given preset weights. Graphically, we rotate the unit vectors via the theta sliders until the purple dot...
1741
Christopher Young
c56young
Apr 5, 2011 7:11 am
Here's what I believe might be a helpful way to think of linear dependency of vectors in terms of force cancellation. In 2D, in general we need forces from...
1742
Christopher Young
c56young
Apr 5, 2011 7:21 am
... The only way three (uniform) force fields can cancel out in 3D is if they are all parallel. If three forces fields canceled out without being parallel to...
1743
Christopher Young
c56young
Apr 5, 2011 7:25 am
... I'm not sure that's correct. However, I still think I've got the basic ideas right in my earlier posts, about cancellation of forces as it relates to...
1744
Christopher Young
c56young
Apr 6, 2011 8:25 pm
... That's true. ... Also true. ... I think "parallel"; was the wrong word. I meant that the vectors were essentially co-planar. But what's the right word when...
1745
Christopher Young
c56young
Apr 6, 2011 9:45 pm
A uniform vector field and its field lines, using GC4's built-in field arrow and field line plotting expressions. Below, we see all the fields canceling each...
1746
Christopher Young
c56young
Apr 8, 2011 7:50 am
... I'm still thinking this over. I'm inclined to think that the the curvature isn't going to cause the linear independence. I think that's practically the...
