Drorbn - User contributions [en]

Talk:06-240/Homework Assignment 9

2006-11-24T03:10:29Z

70.24.213.4:

When will information about the exam be made available?

Perhaps these questions cannot be answered at this time, but I will ask them anyways:
Will the exam include material from the term test?
And in general, will the focus be on computation or theory? Maybe this is a silly question because 240 is a theory course, but a lot of the proofs we have done are either not entirely rigorous or just very tedious (i.e. many steps are finding the right way to write something out).

Talk:06-240/Classnotes For Thursday November 16

2006-11-22T18:58:24Z

70.24.213.4:

When we perform Gaussian Eliminations, sometimes, we can
 
(i) do multiple operations at a time, if they do not "affect" each other (i.e. eliminate all the entries below a 1 in one step),
 
(ii) replace a row with a multiple of the row plus a multiple of anther row--i.e. R1 := aR1+bR2 (which is simply a combination of two elementary operations), and
 
(iii) if we see that two equations are obviously the same early on, eliminate them right away even if it is not the step prescribed by the algorithm.
 
Are we allowed to take these shortcuts in our assignment/exam work?

(There are probably more common sense shortcuts that I have not listed.)

Yes, these are fine. Note though that your (ii) works only if <math>a\neq 0</math>. --[[User:Drorbn|Drorbn]] 08:58, 20 November 2006 (EST)

Talk:06-240/Classnotes For Thursday November 16

2006-11-22T18:58:00Z

70.24.213.4:

When we perform Gaussian Eliminations, sometimes, we can
 
(i) do multiple operations at a time, if they do not "affect" each other (i.e. eliminate all the entries below a 1 in one step),
 
(ii) replace a row with a multiple of the row plus a multiple of anther row--i.e. R1 := aR1+bR2 (which is simply a combination of two elementary operations), and
 
(iii) if we see that two equations are obviously the same early on, eliminate them right away even if it is not the step prescribed by the algorithm.
Are we allowed to take these shortcuts in our assignment/exam work?

(There are probably more common sense shortcuts that I have not listed.)

Yes, these are fine. Note though that your (ii) works only if <math>a\neq 0</math>. --[[User:Drorbn|Drorbn]] 08:58, 20 November 2006 (EST)

Talk:06-240/Classnotes For Thursday November 16

2006-11-22T18:57:48Z

70.24.213.4:

When we perform Gaussian Eliminations, sometimes, we can
 
(i) do multiple operations at a time, if they do not "affect" each other (i.e. eliminate all the entries below a 1 in one step),
 
(ii)replace a row with a multiple of the row plus a multiple of anther row--i.e. R1 := aR1+bR2 (which is simply a combination of two elementary operations), and
 
(iii) if we see that two equations are obviously the same early on, eliminate them right away even if it is not the step prescribed by the algorithm.
Are we allowed to take these shortcuts in our assignment/exam work?

(There are probably more common sense shortcuts that I have not listed.)

Yes, these are fine. Note though that your (ii) works only if <math>a\neq 0</math>. --[[User:Drorbn|Drorbn]] 08:58, 20 November 2006 (EST)

Talk:06-240/Classnotes For Thursday November 16

2006-11-18T21:59:23Z

70.24.213.4:

When we perform Gaussian Eliminations, sometimes, we can
 
(i) do multiple operations at a time, if they do not "affect" each other (i.e. eliminate all the entries below a 1 in one step),
 
(ii) we can replace a row with a multiple of the row plus a multiple of anther row--i.e. R1 := aR1+bR2 (which is simply a combination of two elementary operations), and
 
(iii) if we see that two equations are obviously the same early on, eliminate them right away even if it is not the step prescribed by the algorithm.
Are we allowed to take these shortcuts in our assignment/exam work?

(There are probably more common sense shortcuts that I have not listed.)

Talk:06-240/Classnotes For Thursday November 16

2006-11-18T21:47:30Z

70.24.213.4:

When we perform Gaussian Eliminations, sometimes, we can (i) do multiple operations at a time, if they do not "affect" each other (i.e. eliminate all the entries below a 1 in one step), and (ii) we can replace a row with a multiple of the row plus a multiple of anther row--i.e. R1 := aR1+bR2 (which is simply a combination of two elementary operations).
Are we allowed to take these shortcuts in our assignment/exam work?