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anonymous
 4 years ago
Is there some special method to find the inverse of an elementary matrix?
anonymous
 4 years ago
Is there some special method to find the inverse of an elementary matrix?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0haha u r here without a notification

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Gaussian RowReduction is useful. For a two by two matrix, \[A =\left[\begin{matrix}a & b \\ c & d\end{matrix}\right]\] The inverse matrix is \[\frac{1}{adbc} \left[\begin{matrix}d & b\\ c &a\end{matrix}\right]\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i think they are looking for something using elementary row operations

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I mean elentary matrices

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I don't know what you mean by an elementary matrix.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0LOL neither do I ok i will read some more and try to figure oout

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh oh oh nevermind, sorry, my fault. You only need one row operation to change an elementary matrix into the identity.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0An example might be \[\left[\begin{matrix}1 & 0 \\0 & 2\end{matrix}\right]\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so the second row must be multiplied by a 1/2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So yes that's right samlam

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ya but like I am trying to find the inverse of this

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0using products of elementary matrices

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That's easy to do, just use the usual technique of finding inverse.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0How about \[\left[\begin{matrix}1 & 0 \\0 & 1/2\end{matrix}\right]\] ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0If A is an elementary square matrix.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0y did we just do that?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ohhhh cuz we are going backwards?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now write \( A= I_n A \)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Not getting this stuff at all

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Then do sequence of row operation on the L.H.S and the prefactor I_n till we obtain \( I_n=BA \) This step will be easy since A is an elementary matrix.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now we can write \( A^{1}=B \)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok so show sth an example plz

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am too tired for a Latex example now :(

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0LOL Oh u r so annoying

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0http://nptel.iitm.ac.in/courses/Webcoursecontents/IITKANPUR/mathematics2/node27.html That's rowreduction. The only difference between that and what you're talking about with elementary matrices is that when the matrices are elementary its far easier.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That's an nice example Jemurray.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0A new day will bring fresh wisdom :D I think I gotta sleep over it

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0U kept on writing things and then deleting LOL

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now you believe in evolution? :P

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0LOL uhhhh no! Did u see what i answered tanusingh

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Y did it take u so long to like say something to me

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Obviously I am evolving very slowly :P

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0U knew it was me the whole time right?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0lol me isnt samiam lol

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0lol then who are you? :P

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0How am I suppose to know? lol

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0u know dont be stupid

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am a fool NotStupid :D

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0y r u deleting all ur posts?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0haha you like her ? :P

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I don't want others to know ;)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0and I love her too lol :D

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0star told ever1 that i am rld lol

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0who is star and ever1?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0star is a girl and everyone LOL

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0whtvr she was mad that i asked her out and pretended to be a guy LOL

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Every1 in that group knew that I waas rld but her and so i played a lil joke on her but she like started calling me names and whtvr

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0FOOOOLLLLL I figured out what to do LOL

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0u have digressed frm d topic
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