Finding the Inverse of a Matrix In Exercises 59 and60, show that the matrix is
Chapter 2, Problem 2.221(choose chapter or problem)
Finding the Inverse of a Matrix In Exercises 59 and60, show that the matrix is invertible and find its inverse.59. 60.Beam Deflection In Exercises 61 and 62, forcesand (in pounds) act on a simply supported elasticbeam, resulting in deflections and (in inches) inthe beam (see figure).Use the matrix equation whereand is the flexibility matrix for the beam, to findthe stiffness matrix and the force matrix Theunits of the entries of are given in inches per pound
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