21,178 reputation
42568
bio website none
location Ann Arbor, MI
age 77
visits member for 2 years, 2 months
seen 7 hours ago

I am a retired software developer. I retired at the end of 2003 and since then my computer programming activities have been for recreational purposes. I find Mathematica excellent for that.

I started using Mathematica in 1997 (Ver. 3). I am currently using Ver. 9. Although I have used Mathematica for all kinds of stuff, I use it mostly to pursue my long standing interest in Euclidean geometry, both in its classical Greek synthetic form and in its more modern analytical/transformational form.


Aug
1
reviewed Close How do I make my function behave more like Plot?
Aug
1
answered How to smoothly change the radius of a circle by dragging its circumference?
Aug
1
revised How do I make my function behave more like Plot?
Major clean-up
Aug
1
revised How do I make my function behave more like Plot?
Major clean-up
Aug
1
comment How do I make my function behave more like Plot?
An argument of the form {x, xmin, xmax} isn't a option for Plot. It is Plot's required second argument. You must add a required second argument to your function to handle it.
Aug
1
comment How to solve the warning problem and obtain real roots without imaginary part?
You can also use Chop to remove very small imaginaries caused by numerical methods applied to inexact numbers, which is your situation.
Aug
1
comment Solving minimum length confidence interval problem
I'm sure there are many "equations with distribution functions" that nobody can solve, and I don't know what subset of the ones that can be solved Mathematica can do. I'm only saying that Solve can't solve this particular set of equations. The Documentation Center has a lot to say about equation solving. Make a search on "equation solving".
Aug
1
reviewed Leave Open Finding maximum value with position from Table of values
Aug
1
answered Solving minimum length confidence interval problem
Aug
1
revised Solving minimum length confidence interval problem
Improved formatting
Aug
1
comment Dataset: cannot reproduce a basic example. A bug?
This question appears to be off-topic because the problem the user claims to be experiencing can not be reproduced.
Aug
1
revised How to draw a line (1D) with labeled subdivisions
Minor clean-up
Aug
1
reviewed Close Probability of xy point on bivariate normal distribution
Aug
1
revised How can I save a Manipulate's control settings to a dataset?
added 8 characters in body
Aug
1
revised How can I save a Manipulate's control settings to a dataset?
Improved formatting
Aug
1
revised How can I save a Manipulate's control settings to a dataset?
Improved formatting
Jul
31
revised How can I graph an equation with five variables?
Explained why my approach is efficient
Jul
31
answered How can I graph an equation with five variables?
Jul
31
revised How can I graph an equation with five variables?
deleted 2 characters in body; edited title
Jul
31
revised Why does Assuming[…] work in one case but not in another?
Major clean-up