10 lines
380 B
Mathematica
10 lines
380 B
Mathematica
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function J=Jacobi(ie,kesi,yita,Elements,Nodes)
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ENodes = Elements(ie,:); %<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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xe = Nodes(ENodes(:),:); %<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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x1=xe(1,1);y1=xe(1,2);
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x2=xe(2,1);y2=xe(2,2);
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x3=xe(3,1);y3=xe(3,2);
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x4=xe(4,1);y4=xe(4,2);
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J=1/4*[-(1-yita),(1-yita),(1+yita),-(1+yita);-(1-kesi),-(1+kesi),(1+kesi),(1-kesi)]*[x1 y1;x2 y2;x3 y3;x4 y4];
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