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42568
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location Ann Arbor, MI
age 76
visits member for 2 years
seen 20 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.


Oct
6
comment Trying to get multiple curves on single Bode plot
It's not easy to answer your 2nd question without more info. Does putting "more than one plot on the same graph" mean combining the amplitude and phase plots in one graph, or does it mean making pairs of amplitude and phase plots showing different responses to parameter variations? In any case, especially since this question is closed, you should post a new question with the required additional info to get help on this. I warn you though -- you will have to learn even more about Mathematica nitty-gritty to implement multiple curves in one plot.
Oct
5
revised Formulating a second boundary condition to get an alternative solution to a ODE
Made English more idiomatic; improved formatting
Oct
5
revised Assuming reals of unknown variables in a Matrix valued function
added 4 characters in body
Oct
5
answered Assuming reals of unknown variables in a Matrix valued function
Oct
5
reviewed Leave Open Trying to get multiple curves on single Bode plot
Oct
5
answered Trying to get multiple curves on single Bode plot
Oct
4
comment Graphics3D not rendering Ball as a filled object
It's not a work-around. A descretized region can't be combined with other graphics in a diagram rendered by Graphics3D.
Oct
4
comment Graphics3D not rendering Ball as a filled object
My question is about how Graphics behaves when given Ball, so I don't see this answer as relevant.
Oct
4
accepted Graphics3D not rendering Ball as a filled object
Oct
4
answered Generating a table with two entries for each i
Oct
4
revised Simplifying a b = 1 in non-commutative products?
Routine clean-up
Oct
4
reviewed Edit and Reopen Replacing columns of a matrix with zeros
Oct
4
revised Replacing columns of a matrix with zeros
Improved formatting
Oct
4
reviewed Looks OK NIntegrate Error
Oct
3
revised Dynamic graph construction and visualization (Watts' “Small Worlds” α-model)
Improved formatting
Oct
3
reviewed Reviewed Mathematica Giving Me Trouble
Oct
3
comment How to plot torsion prismatic beam
Since we have a good answer from Junbo Lee, I think this question should be reopened, as there was clearly enough info for him to answer it.
Oct
3
revised How can I get Solve to combine Sin/Cos into Tan?
deleted 4 characters in body; edited title
Oct
3
revised How can I get Solve to combine Sin/Cos into Tan?
Routine clean-up
Oct
3
revised Expressing a matrix in terms of four basis matrices
Routine clean-up