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(((-(D1)/A1--(B1)/A1/(B2-A2/A1*B1)*(D2-A2/A1*D1))-(-(C1)/A1--(B1)/A1/(B2-A2/A1*B1)*(C2-A2/A1*C1))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1)))/(((D4-A4/A1*D1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))-((C4-A4/A1*C1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))),(-((D2-A2/A1*D1))/(B2-A2/A1*B1)--((C2-A2/A1*C1))/(B2-A2/A1*B1)/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1)))/(((D4-A4/A1*D1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))-((C4-A4/A1*C1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))),-(((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1)))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))/(((D4-A4/A1*D1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))-((C4-A4/A1*C1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))),1/(((D4-A4/A1*D1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))-((C4-A4/A1*C1)-(B4-A4/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))/((C3-A3/A1*C1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(C2-A2/A1*C1))*((D3-A3/A1*D1)-(B3-A3/A1*B1)/(B2-A2/A1*B1)*(D2-A2/A1*D1))))
)