What is the current version of GC? I currently have version 3.2, and was wondering if there is an upgrade. I could not find anything on Pacific Tech's web...
... It looks like there's a problem with the server right now.   On Feb 2, 2008, at 4:50 PM, tlylab wrote: I'm using GC to check my calculus, but when I...
... simplification if complains it can not connect to the integral server? The integral server is not maintained my Pacific Tech. I don't know its current...
... The key idea here is to remember that the u and v parameters are used to "leave tracks". The rotation matrix leaves a track as it rotates around the...
How does one go about creating a sphere from a circle? As always, the key idea is to think of the t parameter as leaving a trace of the curve, and the u and v...
[Not sure this one got through, so I'm resending it.] How does one go about creating a sphere from a circle? As always, the key idea is to think of the t...
The online integration site that GC used to hook up to is offline, but here's a workaround: Go to http://integrals.wolfram.com/ index.jsp, type in the function...
Using the online version of the Abramowitz and Stegun reference, I came across a series for the Fresnel integrals which didn't involve the Bessel functions at...
Here, I fixed the colors via two color maps. Since we're going in the negative direction to the left of the y-axis, the signs of the areas are reversed. Also,...
The Cornu spiral (or "clothoid") is the curve whose curvature increases steadily with distance along it, or, more concisely, whose curvature is equal to its...
Here's a version of the clothoid where the red dot's projection on the y-axis traces out the Fresnel sine analog, S( ), on an imaginary "moving tape"---the...
Chris- You should set up a simple web site that archives all of these great examples! I keep copies of most of what you send, but frankly, I can't keep it...
Thanks for the encouragement! I plan to get down to putting things on a website soon. Don't like to take away from the time for actually doing the math,...
Appreciate the feedback and the encouragement. Any chance I could turn to you with the occasional website question. I've got Freeway as my website builder, and...
You might want to consider a wiki. They are relatively easy to set up I understand and others can participate. Alternatively you could do a blog. Just...
The green line is a plot of the curvature with arc length, showing that there's a steady increase. The red dots are equally spaced on the clothoid, showing...
Hello Christopher and other Again I have been busy with so many things and away from Maths and especially GC. Although I renewed the lab (by remote control)...
Although you can't do 4-by-4 matrices in GC 3.5, unfortunately, you can always get the same effect via combinations of vector and matrices. Also, you can right...
Actually GC3.5 lets you make 4x4 matrices too. You just need to make a 3x3 matrice, select it and use Edit -> Copy as Text. Then paste into some text editor...
Peter is correct. In fact, I was able to go up to a 10x10 using the same technique and do a matrix multiplication. I'm not sure what the upper limit is. ...
Petri (sorry for the previous misspelling) is correct. In fact, I was able to go up to a 10x10 using the same technique and do a matrix multiplication. I'm...
...  Your absolutely right, thanks. The derivation should be  On May 12, 2008, at 5:34 PM, Chuck Iverson wrote: I think the A_xP in the third and fourth...
Thanks again, you're right. I was using MathType to typeset this, and I'm not too familiar with it. Also, as you might guess, I was pretty tired. The correct...
