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April 7th, 2018, 04:25 AM   #11
Banned Camp

Joined: Dec 2017
From: Tel Aviv

Posts: 87
Thanks: 3

wise component

Where is the component wise in the picture?
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 component wise.png (12.4 KB, 14 views)

 April 7th, 2018, 02:50 PM #12 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 This must be a language problem! "component wise" isn't a part of a matrix and isn't even a noun. It is an adjective describing how we are talking about the numbers in the matrix. In your example, $\displaystyle \begin{bmatrix}A & B & C \\ D & E & F\\ G & H & I\end{bmatrix}$, each of those letters, representing numbers, is a "component" of the matrix. If I had a sum of two matrices, $\displaystyle \begin{bmatrix}A & B & C \\ D & E & F\\ G & H & I\end{bmatrix}+ \begin{bmatrix} R & S & T \\ U & V & W \\ X & Y & Z \end{bmatrix}$ One of the "components" in the first matrix is A and the corresponding "component" in the other matrix is "R" because they are both in the upper left corner. Their sum is "A+ R" and that number goes in the upper left corner of the sum matrix. The "B" and "S" are corresponding "components". Their sum is B+ S and that sum goes into that same place. The sum of the two matrices above, done 'componentwise' is $\displaystyle \begin{bmatrix}A+ R & B+ S & C+ T \\ D+ U & E+ V & F+ W \\ G+ X & H+ Y & I+ Z \end{bmatrix}$ Thanks from policer
 April 7th, 2018, 03:02 PM #13 Senior Member     Joined: Sep 2015 From: USA Posts: 2,585 Thanks: 1430 Why do you all continue to humor these two? They post a question that can easily be answered on google every bleeding day and you all treat them as if they were posing the questions of the spheres. If they actually gave a damn about learning they'd spend their time reading rather than posting inane questions. Thanks from topsquark
 April 7th, 2018, 10:30 PM #14 Banned Camp   Joined: Dec 2017 From: Tel Aviv Posts: 87 Thanks: 3 I don't think that google can give me an answer like how Country Boy answer. And fine I use google and I was confused. Insteed of quoteing google result and flow the forum It Is Very Helpful to get a purpose answer.
 April 10th, 2018, 04:11 AM #15 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902 I did post "pictures"- go back and look at post #2.

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