Expression 20: 9 StartFraction, "q" Over "L" , EndFraction natural log left parenthesis, StartFraction, StartRoot, left parenthesis, "x" plus StartNestedFraction, "L" NestedOver 2 , EndNestedFraction , right parenthesis squared plus "y" squared , EndRoot plus "x" plus StartNestedFraction, "L" NestedOver 2 , EndNestedFraction Over StartRoot, left parenthesis, "x" minus StartNestedFraction, "L" NestedOver 2 , EndNestedFraction , right parenthesis squared plus "y" squared , EndRoot plus "x" minus StartNestedFraction, "L" NestedOver 2 , EndNestedFraction , EndFraction , right parenthesis equals "V" times left bracket, 1 , 2 , 3 , 4 , 5 , right bracket Has graph.9qLlnx+L22+y2+x+L2x−L22+y2+x−L2=V·1,2,3,4,5