Question: Show that for the quadrilateral element described in Section 10.2, [J] can be expressed as XI N1,5 N2,5 N3, s [J] = N1,1 N2.1 N3,1

Show that for the quadrilateral element described in Section 10.2, [J] can be expressed as

XI У N1,5 N2,5 N3, s [J] = N1,1 N2.1 N3,1 N4.5 || x2 y2 N4.1 Хз Уз

XI N1,5 N2,5 N3, s [J] = N1,1 N2.1 N3,1 N4.5 || x2 y2 N4.1

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