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COMPUTATIONAL AND APPLIED MATHEMATICS DISCUSSION

-- PREVIOUS DISCUSSIONS --

Lorenco Sibambo (based at University of Witwatersrand)

question papers question under Mechanics I
HI Mates is the anyone who is having past papers for mechanics I really need them

August 13 2016, 11:35 pm

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Shanah Carlson (based at University of Witwatersrand)

Energy question under Mechanics I
Hi guys. I have a question, if someone could explain how to calculate this.

The extinction of the dinousaurs is widely believed to be due to the impact of a very massive meteorite striking the sea, land or both. Consider a smaller meteorite of mass 4 million kg entering the atmosphere vertically at 15 km/s and impacting land in a vertical fashion. You are given that:
1 megaton of TNT is equivalent to 4.2 thousand million million joules
20 kilotons of TNT is the energy associated with the explosion of an atomic bomb
The number of atomic bombs to which the meteorite impact would have been equivalent is approximately....


September 23 2015, 6:49 pm

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Lee Govender (based at University of Witwatersrand)

Absolute and Relative Error in MATLAB question under Numerical Techniques
hi, please help with coding absolute and relative error in matlab...using something of the following...... function errVal = AbsError(x,star).......



March 17 2015, 4:52 pm

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Houston Muzamhindo (based at University of Cape Town)

Modeling Workshop(s) question under main group
Some students have asked for modeling workshops in preparation for the final exam. We are working on organizing one or two sessions.

October 13 2014, 5:55 pm

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Avi Bank (based at University of Witwatersrand)

Past Papers AstroMech question under Astronomy I
Evening Houston, hope you're well. Any news on those past papers?

August 19 2014, 6:43 pm

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Colani Mnisi (based at University of Witwatersrand)

Centre of Mass question under Mechanics I
After the centre of mass video, weren't there supposed to be more videos afterwards?

August 19 2014, 5:21 pm

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Matome Modiba (based at University of Witwatersrand)

Second Equatorial System question under Astronomy I
Just as a follow up, correct me if I am wrong, but isn't it that the sun doesn't move? Because when you explain the concept of ecliptic and equinoxes, you talk about the sun as if it is a moving object.

August 18 2014, 10:19 pm

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Matome Modiba (based at University of Witwatersrand)

Second Equatorial System question under Astronomy I
Hi Houston, first of all great videos man, very helpful and you explain in detail, thank you very much for that. Now, the thing that I just want to be sure of is with regards to your drawing of the ecliptic. Does this mean that the equinoxes are at East and West points? Hope I am making sense.

August 18 2014, 10:08 pm

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Lehlohonolo (based at University of Witwatersrand)

General question question under Numerical Techniques
Hey guys,is there anyone who knows how to do a code for Gaussian Elimination with Partial Pivoting?

April 1 2014, 11:00 pm

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Rendani Rabakali (based at University of Witwatersrand)

General question question under main group
Hi mates,please help with this integral for methods A.integral(x^2-x)/(-ax^2 bx c)

February 18 2014, 8:58 pm

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Houston Muzamhindo (based at University of Cape Town)

General question question under main group
I have created two courses for the Astronomy and the Mechanics sections. This is to enable quick access to content as the two sections are quite different. It would be difficult to look for Astronomy videos in a bunch of Mechanics ones though the course is intended to be a single course as it is done at the University of Witwatersrand in South Africa. The aim is just to reduce the time it will take to get the right videos for the right section.nI have also created a group where you can ask any Astronomy or Mechanics question but asking here achieves the same result. So go ahead and register into the two courses and get the material there if you are doing the courses or just interested.

August 14 2013, 1:02 am

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Houston Muzamhindo (based at University of Cape Town)

General question question under main group
This is the discussion group for the Astronomy and Mechanics course where you can ask your questions directly to me and I will answer explaining and concept further that you might have difficulties with.

August 10 2013, 12:32 pm

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Houston Muzamhindo (based at University of Cape Town)

General question question under Astronomy I
We will be uploading new videos soon for the Applied Mathematics Astronomy courses. Many students find this challenging so during the holidays, feel free to take a look at them and get yourself up to speed. It will definitely be helpful :)

June 15 2013, 11:47 pm

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Amerko Ndubane (based at University of Witwatersrand)

General question question under Numerical Techniques
i need help with the simplex method,esp the code in matlab

May 13 2013, 2:41 am

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RAMPHABANA FHULUFHELO (based at University of Witwatersrand)

General question question under main group
hey guys can you help me with this equation sinx/x, find local minimum and maximum of this optimisation

April 16 2013, 8:40 pm

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Belardina Zunguza (based at University of Witwatersrand)

General question question under Numerical Techniques
Someone please help me with the code for Gauss-Seidel in matlab?

March 15 2013, 4:24 pm

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Asiphe Mahlati (based at University of Witwatersrand)

General question question under Numerical Techniques
I dont understand lu decomposition with equating coefficients appm1

March 11 2013, 1:50 am

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Houston Muzamhindo (based at University of Cape Town)

General question question under main group
This is the CAM Discussion Group. If you have any CAM question, you can join the group and post your question. If you have the answer to any question here, join the group and answer in the comments section of that question.

March 10 2013, 1:21 pm

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Previous questions

HI Mates is the anyone who is having past papers for mechanics I really need them...

Someone please help me with the code for Gauss-Seidel in matlab?...

I have created two courses for the Astronomy and the Mechanics sections. This is to enable quick access to content as the two sections are quite different. It would be difficult to look for Astronomy ...

I dont understand lu decomposition with equating coefficients appm1...

Hi guys. I have a question, if someone could explain how to calculate this. The extinction of the dinousaurs is widely believed to be due to the impact of a very massive meteorite striking the sea, l...

This is the discussion group for the Astronomy and Mechanics course where you can ask your questions directly to me and I will answer explaining and concept further that you might have difficulties wi...

Hey guys,is there anyone who knows how to do a code for Gaussian Elimination with Partial Pivoting?...

We will be uploading new videos soon for the Applied Mathematics Astronomy courses. Many students find this challenging so during the holidays, feel free to take a look at them and get yourself up to ...

Just as a follow up, correct me if I am wrong, but isn't it that the sun doesn't move? Because when you explain the concept of ecliptic and equinoxes, you talk about the sun as if it is a mo...

Evening Houston, hope you're well. Any news on those past papers?...

Hi mates,please help with this integral for methods A.integral(x^2-x)/(-ax^2 bx c)...

i need help with the simplex method,esp the code in matlab...

This is the CAM Discussion Group. If you have any CAM question, you can join the group and post your question. If you have the answer to any question here, join the group and answer in the comments se...

After the centre of mass video, weren't there supposed to be more videos afterwards?...

Some students have asked for modeling workshops in preparation for the final exam. We are working on organizing one or two sessions....

hi, please help with coding absolute and relative error in matlab...using something of the following...... function errVal = AbsError(x,star)..........

hey guys can you help me with this equation sinx/x, find local minimum and maximum of this optimisation...

Hi Houston, first of all great videos man, very helpful and you explain in detail, thank you very much for that. Now, the thing that I just want to be sure of is with regards to your drawing of the ec...

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