運算式 7: "K" "D" Superscript, "N" minus 1 , Baseline left parenthesis, "x" plus "y" , right parenthesis positive "x" "y" equals "K" "D" Superscript, "N" , Baseline plus left parenthesis, StartFraction, "D" Over "N" , EndFraction , right parenthesis Superscript, "N" , BaselineKDN−1x+y+xy=KDN+DNN
7
運算式 8: "K" equals "A" "K" Subscript, 0 , Baseline StartFraction, "g" squared Over left parenthesis, "g" positive 1 negative "K" Subscript, 0 , Baseline , right parenthesis squared , EndFractionK=AK0g2g+1−K02
8
運算式 9: "K" Subscript, 0 , Baseline equals StartFraction, "x" "y" "N" Superscript, "N" , Baseline Over "D" Superscript, "N" , Baseline , EndFractionK0=xyNNDN
