VV=$1*$1 U11=$2*$2 U12=$2*$3 U22=$3*$3 U11=2*U11 U12=2*U12 U22=2*U22 U11=U11/$1 U12=U12/$1 U22=U22/$1 U11=U11-$4 U12=U12-$5 U22=U22-$6 U11=U11/VV U12=U12/VV U22=U22/VV U12=U12+U12 L=U11+U22 L=L*L U11=U11*U11 U12=U12*U12 U22=U22*U22 SOB=U11+U22 SOB=SOB+SOB SOB=SOB+L SOB=SOB+U12 SOB=SOB/3 $7=SQRT(SOB)