12,858 reputation
41653
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location Ann Arbor, MI
age 76
visits member for 1 years, 6 months
seen 18 mins 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 the classical Greek synthetic form and in the more modern analytical form.


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comment Simple subtraction question
@Jens. Good idea. Done.
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revised Simple subtraction question
Added discussion of special case suggested by Jens
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answered Simple subtraction question
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answered Creating text using Table
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reviewed Close Integral equation
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reviewed Leave Open How to the take derivatives of a parametric function?
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reviewed Edit Simple subtraction question
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revised Simple subtraction question
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comment How to the take derivatives of a parametric function?
@Artes. It seems clear enough to me. I'm answering it.
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answered How to the take derivatives of a parametric function?
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reviewed Reviewed What mathematical function can give me a set of curves similar to these?
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reviewed Reviewed How to the take derivatives of a parametric function?
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revised How to the take derivatives of a parametric function?
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reviewed Reviewed Integral equation
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revised Integral equation
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comment How to measure the speed of ball from a video or a set of pictures?
This question is off-topic because it is about the design of an experiment to capture data for later processing and not about using Mathematica to do the processing.
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revised How to measure the speed of ball from a video or a set of pictures?
deleted 4 characters in body
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comment How to measure the speed of ball from a video or a set of pictures?
The shutter speed is relevant for the single image methods, but you will also to know a lot about the characteristics of the shutter mechanism. For working with multiple images, you will need to have a very accurate time code for each image because the intervalometer delta-t is usually not trustworthy.
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revised How to measure the speed of ball from a video or a set of pictures?
clean-up
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revised How to copy a function by value?
Added links to related answers