For the three-noded bar (Figure P10-1), what Gaussian quadrature rule (how many Gauss points) would you recommend

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For the three-noded bar (Figure P10-1), what Gaussian quadrature rule (how many Gauss points) would you recommend to evaluate the stiffness matrix? Why?

Figure 10-10 Gaussian quadrature using two sampling points

X = +0.5773.. Ул У» X = -1
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