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ECO3145 (11)
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Department
Economics
Course
ECO3145
Professor
Leslie Shiell
Semester
Fall

Description
ECO 3145 Mathematical Economics I Lecture 0 Review of Matrix Algebra1Chiang ch 4146 5155linear equation systemxd11 where A is anmatrix of coefficients andnnxddAxxdnn1IAA inverse matrix nonsingularityif A does not have an inverse then it is said to be singularif A does have an inverse then it is said to be nonsingular2A determinant Solve using Laplace expansion 0A test for nonsingularity Aadj1A finding an inverse matrixA Ajx Cramers rulejApossible solution outcomes forChiang p106 p111
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