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Ken Bannister

Last seen: 10 days ago Active since 2021

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Question

Simplifying results from rat function
Suppose I have found the decimal value: 0.642857142857143 Which by the way I know to be 9/14 if I go: result =rat(0.64285714...

4 months ago | 1 answer | 0

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Question

Has anyone worked with Giuga numbers?
A positive integer x > 1 with prime factors p1p2p3...pi that satifies the relationship 1/p1 + 1/p2 + 1/p3 +...+ 1/pi - 1/x = k, ...

5 months ago | 1 answer | 0

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Question

Problem using planetEphemeris function
I want to use planetEphemeris to obtain daily noon (X,Y,Z) positions of former planet Pluto wrt to Mercury, starting at midnight...

6 months ago | 1 answer | 0

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Question

Use of the Jet Propulsion Laboratory (JPL) ephemeris
The "Jet Propulsion Laboratory (JPL) ephemeris" is a source of astronomical data on the planets, their moons, and other objects...

7 months ago | 0 answers | 0

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Question

Can the symbolic toolbox Laplacian be used for other than cartesian coordinates?
In potential theory and elasticity theory, the Laplacian operator often appears, and is applied in all separable (orthogonal) c...

8 months ago | 1 answer | 0

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Question

Good book on linear algebra using MATLAB?
I realize there are countless great books on linear algebra (i.e., matrix theory), marching back many decades. For example, I ha...

9 months ago | 2 answers | 0

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Can anyone recommend some good books, articles, an tutorials on cell usage? I do have some older books that cover the syntax ru...

10 months ago | 1 answer | 0

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Thank you Joseph - I see what you mean. I do have a few of the toolboxes which depend on Simulink in the background. Perhaps I ...

11 months ago | 0

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Has anyone worked through the SimScape OnRamp exercises?
Thanks, Chris. After a good night's sleep I took another careful look and discovered I misread the instructions on how to assig...

11 months ago | 0

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Question

New user here of the Home version of Simulink 2021a. I realize there is a ton of books available on Simulink, but is there any ...

11 months ago | 1 answer | 0

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Question

Has anyone worked through the SimScape OnRamp exercises?
I am a Home version R2021a user and have acquired the Simulink and SimScape toolboxes. I was able to get all the Simulink OnRam...

11 months ago | 1 answer | 0

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Question

Why did I get this bunch of funny messages after installing R2021a?
After I let the MATLAB installer install Home Use R2021a on my Lenovo laptop with Windows 10, the MATLAB screen displayed this b...

11 months ago | 0 answers | 0

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Question

Does the SimMechanics toolbox still exist and can it be obtained from Mathworks for R2020b?
I need to obtain the home version of SimMechanics for R2020b, but when I look at the list of toolboxes currently available, it ...

11 months ago | 1 answer | 0

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Question

I am looking for drawingmesh
Anyone know of the existence of a matlab routine named drawingmesh?

12 months ago | 1 answer | 0