Expressão 6: left parenthesis, "u" , ln left parenthesis, "u" , right parenthesis , right parenthesisu,lnu
6
Expressão 7: "y" equals negative "u" "x" plus "u" squared plus natural log left parenthesis, "u" , right parenthesisy=−ux+u2+lnu
7
Expressão 8: left parenthesis, "x" minus "f" , right parenthesis squared plus left parenthesis, "y" minus "g" , right parenthesis squared equals "f" squaredx−f2+y−g2=f2
8
Expressão 9: left parenthesis, "f" "t" , "g" "t" , right parenthesisft,gt