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GraphingCalcUsers · User group for Pacific Tech's Graphing Calculator math education visualization software

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  • Members: 478
  • Category: Education
  • Founded: Dec 12, 2000
  • Language: English
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Messages 1575 - 1604 of 1978   Oldest  |  < Older  |  Newer >  |  Newest
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1575 Christopher O. Young
c1572young Send Email
Sep 27, 2008
6:37 pm
Some notes on natural logs: As far as natural logarithms go, you just use "ln x" or "ln(x)". The last one has normal parentheses, via Shift 9 and Shift 0 as...
1576 Christopher O. Young
c1572young Send Email
Oct 4, 2008
5:44 am
... operator name. Function Operator Trig functions sine sin cosine cos tangent tan cosecant csc secant sec cotangent cot Inverse trig functions arc sine asin...
1577 Jorge de Sousa Pires
jspxmp Send Email
Oct 10, 2008
7:06 pm
Hello all! Have you seen this one? http://www.spacetime.us/iphone/ It is not a secret anymore. Have a nice week-end. Jorge 26 aug 2008 kl. 03.11 skrev...
1578 Kevin Farrell
kjf103057 Send Email
Oct 11, 2008
11:42 am
Great Let them do it!!!!!! Energy for gc can remain focused Thanks! ... Re: [GraphingCalcUsers] Re: port to iPhone/iPod touch? Great Let them do it!!!!!! ...
1579 Jorge de Sousa Pires
jspxmp Send Email
Oct 11, 2008
7:00 pm
hej Kevin! Correct. We will keep the focus. ... Ciao to all of you, great equationists out there! Jorge ... Great Let them do it!!!!!! Energy for gc can remain...
1580 Bill Briggs
lazyscripter Send Email
Nov 27, 2008
4:00 pm
why won't this graph Greetings, I confess to having, from time to time, difficulty knowing why GC won't graph some things. I've used sliders in other animated...
1581 Petri Sirkkala
petrisirkkala Send Email
Nov 28, 2008
9:37 pm
Hi, The y = ... line probably should read y(x) = ... I don't see w (the one on the first eq. line) used anywhere. I removed it. Also the y(x) = g(x) will not...
1582 Kevin Farrell
kjf103057 Send Email
Nov 29, 2008
3:05 pm
Chris young should be able to figure this out!...
1583 Christopher O. Young
c1572young Send Email
Nov 30, 2008
6:33 pm
... The problem seems to have been just with the "w"; GC 3.5 won't accept using reserved letters (t, u, v, w, i, r, etc.). The "w" is used in complex 4D...
1584 Christopher O. Young
c1572young Send Email
Dec 4, 2008
8:45 am
The following are the special symbols that GC 3.5 uses. These can't be used as variables. You can find them by searching for "reserved"; in the Help. I've...
1585 David Craig
dcraigx Send Email
Dec 11, 2008
6:56 am
... GC is quirky, to be sure. I do hope this gets cleaned up as time goes on. The LONG list of reserved names is one of my pet peeves. I really, REALLY...
1586 dgorbachev Send Email Jan 19, 2009
6:39 am
I'm just wondering is there any way to specify initial conditions for an ordinary differential equation, for instance dy/dx = ky, y(0) = 2...
1587 Chris Young
c1572young Send Email
Jan 19, 2009
5:22 pm
... No initial conditions can be specified explicitly with GC 3.5, however you can move the cross-hair in such a way as to see the curve matching any given...
1588 Kevin Farrell
kjf103057 Send Email
Jan 20, 2009
11:43 am
You can use the color box to get just one curve Makes this much easier Move curve to the point Just watch coordinates...no need to plot lines ... Re:...
1589 Chris Young
c1572young Send Email
Jan 21, 2009
10:12 am
Eventually maybe this could lead to ways of visualizing different numerical integration methods for ODEs. One thing we notice is that the solution curves...
1590 Chris Young
c1572young Send Email
Jan 22, 2009
12:01 pm
Hoping to get some visual insight into how each function curve is threaded through the slope field by numerical solution procedures, e.g. Runge-Kutta method. ...
1591 Chris Young
c1572young Send Email
Jan 22, 2009
12:36 pm
As long as we've got an integrable function of x on the right hand side, we can integrate.  The integrator at http://integrals.wolfram.com/index.jsp works, ...
1592 Chris Young
c1572young Send Email
Jan 22, 2009
12:56 pm
The slider can be used to vary the k coefficient.   The slider can be used to vary the k  coefficient....
1593 Chris Young
c1572young Send Email
Jan 22, 2009
1:00 pm
Sorry, I wasn't showing all the slope segments due to a typo in one of the equations.   Sorry, I wasn't showing all the slope segments due to a typo in...
1594 Chris Young
c1572young Send Email
Jan 24, 2009
9:30 pm
For some reason I couldn't take the derivative of the unit tangent the way I wanted to, so the tubes may get a little distorted in places. However, you can...
1595 Chris Young
c1572young Send Email
Jan 24, 2009
9:42 pm
Here's why the spiral gets kinky. The way the drawing is done is to twist each segment between the "hoops". So the tube will be narrower in the middle.  ...
1596 Chris Young
c1572young Send Email
Jan 24, 2009
10:06 pm
Just derives from rule of exponents. I guess the apparent lack of symmetry between the general exponential, and the general logarithm is due to the Chain Rule...
1597 Chris Young
c1572young Send Email
Jan 24, 2009
10:28 pm
The function for the unit tangent is working OK, but GC doesn't like the exression for the unit normal I have, although it's correct mathematically.   ...
1598 Chris Young
c1572young Send Email
Jan 24, 2009
11:00 pm
The monkey is seated in the Frenet–Serret frame http:// en.wikipedia.org/wiki/Frenet_formulas   The monkey is seated in the  Frenet–Serret frame ...
1599 Chris Young
c1572young Send Email
Jan 24, 2009
11:00 pm
Here, the tubes get distorted: I think I've fixed it below, by just normalizing the binormal....
1600 Chris Young
c1572young Send Email
Jan 24, 2009
11:03 pm
Got the monkey seated upright by reversing one sign:   Got the monkey seated upright by reversing one sign:...
1601 Chris Young
c1572young Send Email
Jan 24, 2009
11:16 pm
 ...
1602 Chris Young
c1572young Send Email
Jan 25, 2009
10:28 am
An attempt to contrast a curve with no torsion (the plane sine curve), with a twisting one (the wobbly sine curve). The chick on the easy roller coaster stays...
1603 Chris Young
c1572young Send Email
Jan 25, 2009
10:33 am
An attempt to contrast a curve with no torsion (the plane sine curve), with a twisting one (the wobbly sine curve). The chick on the easy roller coaster stays...
1604 johnalbers2003 Send Email Feb 18, 2009
9:25 pm
Looking through the demos, I see some things that as far as I know are not documented or hardly mentioned in any of my reading about graphing calculator. Is...
Messages 1575 - 1604 of 1978   Oldest  |  < Older  |  Newer >  |  Newest
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