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GraphingCalcUsers · User group for Pacific Tech's Graphing Calculator math education visualization software
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Messages 1575 - 1604 of 1648   Oldest  |  < Older  |  Newer >  |  Newest
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1575
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...
Christopher O. Young
c1572young
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Sep 27, 2008
6:37 pm
1576
... operator name. Function Operator Trig functions sine sin cosine cos tangent tan cosecant csc secant sec cotangent cot Inverse trig functions arc sine asin...
Christopher O. Young
c1572young
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Oct 4, 2008
5:44 am
1577
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...
Jorge de Sousa Pires
jspxmp
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Oct 10, 2008
7:06 pm
1578
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!!!!!! ...
Kevin Farrell
kjf103057
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Oct 11, 2008
11:42 am
1579
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...
Jorge de Sousa Pires
jspxmp
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Oct 11, 2008
7:00 pm
1580
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...
Bill Briggs
lazyscripter
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Nov 27, 2008
4:00 pm
1581
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...
Petri Sirkkala
petrisirkkala
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Nov 28, 2008
9:37 pm
1582
Chris young should be able to figure this out!...
Kevin Farrell
kjf103057
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Nov 29, 2008
3:05 pm
1583
... 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...
Christopher O. Young
c1572young
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Nov 30, 2008
6:33 pm
1584
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...
Christopher O. Young
c1572young
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Dec 4, 2008
8:45 am
1585
... 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...
David Craig
dcraigx
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Dec 11, 2008
6:56 am
1586
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...
dgorbachev
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Jan 19, 2009
6:39 am
1587
... 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...
Chris Young
c1572young
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Jan 19, 2009
5:22 pm
1588
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:...
Kevin Farrell
kjf103057
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Jan 20, 2009
11:43 am
1589
Eventually maybe this could lead to ways of visualizing different numerical integration methods for ODEs. One thing we notice is that the solution curves...
Chris Young
c1572young
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Jan 21, 2009
10:12 am
1590
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. ...
Chris Young
c1572young
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Jan 22, 2009
12:01 pm
1591
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, ...
Chris Young
c1572young
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Jan 22, 2009
12:36 pm
1592
The slider can be used to vary the k coefficient.   The slider can be used to vary the k  coefficient....
Chris Young
c1572young
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Jan 22, 2009
12:56 pm
1593
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...
Chris Young
c1572young
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Jan 22, 2009
1:00 pm
1594
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...
Chris Young
c1572young
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Jan 24, 2009
9:30 pm
1595
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.  ...
Chris Young
c1572young
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Jan 24, 2009
9:42 pm
1596
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...
Chris Young
c1572young
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Jan 24, 2009
10:06 pm
1597
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.   ...
Chris Young
c1572young
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Jan 24, 2009
10:28 pm
1598
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 ...
Chris Young
c1572young
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Jan 24, 2009
11:00 pm
1599
Here, the tubes get distorted: I think I've fixed it below, by just normalizing the binormal....
Chris Young
c1572young
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Jan 24, 2009
11:00 pm
1600
Got the monkey seated upright by reversing one sign:   Got the monkey seated upright by reversing one sign:...
Chris Young
c1572young
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Jan 24, 2009
11:03 pm
1601
 ...
Chris Young
c1572young
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Jan 24, 2009
11:16 pm
1602
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...
Chris Young
c1572young
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Jan 25, 2009
10:28 am
1603
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...
Chris Young
c1572young
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Jan 25, 2009
10:33 am
1604
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...
johnalbers2003
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Feb 18, 2009
9:25 pm
Messages 1575 - 1604 of 1648   Oldest  |  < Older  |  Newer >  |  Newest
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