Transcription of Matrix Algebra and Applications - UTEP
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Matrix Algebra and Applications - UTEP
3 Matrix Algebra and Addition andScalar ModelsKey ConceptsReview ExercisesCase Study ExercisesTechnology GuidesCASE STUDYThe Japanese EconomyA senator walks into your cubicle in the Congressional Budget Office. Look here, she says, I don t see why the Japanese trade representative is getting so upset with my proposal to cutdown on our use of Japanese finance and insurance. He claims that it ll hurt Japan s miningoperations. But just look at Japan s input-output table. The finance sector doesn t use anyinput from the mining sector. How can our cutting down demand for finance and insurancehurt mining? How should you respond?173 Jose Fuste Raga/Zefa/CorbisOnline you will find: Section by section tutorials A detailed chapter summary A true/false quiz Additional review exercises A Matrix Algebra tool, game theoryutility, and other 7/17/06 4:24 PM Page 173 IntroductionWe used matrices in Chapter 2 simply to organize our work. It is time we examined themas interesting objects in their own right.
An easy way to remember this is to think of the acronym “RC” for “Row then Column.” quick Example Referring to the Entries of a Matrix There is a systematic way of referring to particular entries in a matrix. If i and j are num-bers, then the entry in the ith row and jth column of the matrix A is called the ijth entry of A.
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