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Question from a student :
  
 
I have a question on the Kirchoff law problem, section 7.3 problem 18. On the loop portion of the defining equations, relative to a clockwise direction, I find the equation of the right loop to be -12 I2 + 8 I3 = -24. Is this correct to assume the I2 term is negative due to the counterclockwise flow of I2, as with the voltage term?
 
I have a question on the Kirchoff law problem, section 7.3 problem 18. On the loop portion of the defining equations, relative to a clockwise direction, I find the equation of the right loop to be -12 I2 + 8 I3 = -24. Is this correct to assume the I2 term is negative due to the counterclockwise flow of I2, as with the voltage term?
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Answer from [[User:Park296|Eun Young]] :
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Yes, it's correct and it's same as  <math> 12 I_2  -8 I_3 = 24.</math>
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Question form a student :
  
 
That equation is the same thing I got, I just took a different direction for my KVL around the loop (e.g. <math>12 I_2 - 8 I_3 = 24</math>). However, I don't fully understand what your question is. I do however have a question on p. 287 #12, 14, and 15. Is the book looking for a rigorous proof or just an example of this property? --[[User:Rrusson|Rrusson]] 18:48, 25 August 2013 (UTC)  
 
That equation is the same thing I got, I just took a different direction for my KVL around the loop (e.g. <math>12 I_2 - 8 I_3 = 24</math>). However, I don't fully understand what your question is. I do however have a question on p. 287 #12, 14, and 15. Is the book looking for a rigorous proof or just an example of this property? --[[User:Rrusson|Rrusson]] 18:48, 25 August 2013 (UTC)  
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Answer from [[User:Park296|Eun Young]] :
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When a problem asks you to show or prove something, you need to provide proof. When a problem asks you to disprove something, you need to give an example.
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Hence, you need to prove #12, 14, and 15. There is a theorem about an rank in sec 7.4. With this theorem, you can show the properties in #12, 14, and 15 easily. 
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[[2013_Fall_MA_527_Bell|Back to MA527, Fall 2013]]
 
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Revision as of 09:33, 26 August 2013


Homework 1 collaboration area

Feel free to toss around ideas here. Feel free to form teams to toss around ideas. Feel free to create your own workspace for your own team. --Steve Bell

Here is my favorite formula:

$ f(a)=\frac{1}{2\pi i}\int_\gamma \frac{f(z)}{z-a}\ dz. $

This is a test formula:

$ A \vec x= \vec b $ - Eun Young

Question from a student :

I have a question on the Kirchoff law problem, section 7.3 problem 18. On the loop portion of the defining equations, relative to a clockwise direction, I find the equation of the right loop to be -12 I2 + 8 I3 = -24. Is this correct to assume the I2 term is negative due to the counterclockwise flow of I2, as with the voltage term?

Answer from Eun Young :

Yes, it's correct and it's same as $ 12 I_2 -8 I_3 = 24. $

Question form a student :

That equation is the same thing I got, I just took a different direction for my KVL around the loop (e.g. $ 12 I_2 - 8 I_3 = 24 $). However, I don't fully understand what your question is. I do however have a question on p. 287 #12, 14, and 15. Is the book looking for a rigorous proof or just an example of this property? --Rrusson 18:48, 25 August 2013 (UTC)

Answer from Eun Young :

When a problem asks you to show or prove something, you need to provide proof. When a problem asks you to disprove something, you need to give an example. Hence, you need to prove #12, 14, and 15. There is a theorem about an rank in sec 7.4. With this theorem, you can show the properties in #12, 14, and 15 easily.



Back to MA527, Fall 2013

Alumni Liaison

Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett