Consider Attachment 20439

If Attachment 20440 compute Attachment 20441

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- Jan 14th 2011, 11:35 PMsshhAn Exercise
Consider Attachment 20439

If Attachment 20440 compute Attachment 20441 - Jan 14th 2011, 11:36 PMdwsmith
- Jan 15th 2011, 12:05 AMFernandoRevilla
Using well known properties of transpose matrices, it is easy to prove

Fernando Revilla - Jan 15th 2011, 09:44 AMHallsofIvy
This is simply "arithmetic".

With ,

so that

Have you done that? With a 2 by 2 matrix, you should find the calculation fairly easy.

Or, using fernandorevilla's suggestion, calculate

and**then**take the transpose. - Jan 15th 2011, 10:47 AMFernandoRevilla
We needn't calculate anything. By hypothesis:

so,

That is all. :)

Fernando Revilla