Expressão 20: StartFraction, "f" Subscript, "y" , Baseline left parenthesis, "x" , right parenthesis Over 1 minus "b" plus "b" StartNestedFraction, "f" Subscript, "E" , Baseline left parenthesis, "x" , right parenthesis NestedOver .5 , EndNestedFraction , EndFraction minus 1.5fyx1−b+bfEx.5−1.5
20
Expressão 21: "b" equals 1b=1
21
Expressão 22: left parenthesis, 0 , "b" minus 3.5 , right parenthesis0,b−3.5
22
Expressão 23: left parenthesis, 0 , "t" minus 3.5 , right parenthesis0,t−3.5