## Question

###### Point) Consider the following truss system.AIl bars are either vertical, horizontal, or at 60" from horizontal.Enter the elongation matrix (A = BT): (in the form "node horiz" , "node vert" , "node 2 horiz" etc_2+1/sqrt2Ilsqrt21/sqrt21+1/sqrt2(Remember that webwork uses radians for computations_This truss system should be stable: The matrix is square, which is good. However; you should be able to verify that A has a pivot in each column of its LU decomposition:

point) Consider the following truss system. AIl bars are either vertical, horizontal, or at 60" from horizontal. Enter the elongation matrix (A = BT): (in the form "node horiz" , "node vert" , "node 2 horiz" etc_ 2+1/sqrt2 Ilsqrt2 1/sqrt2 1+1/sqrt2 (Remember that webwork uses radians for computations_ This truss system should be stable: The matrix is square, which is good. However; you should be able to verify that A has a pivot in each column of its LU decomposition: This means that it has no nullspace_

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