Expression 4: "t" Subscript, "m" "a" "x" , Baseline equals 60 minus StartFraction, "f" prime left parenthesis, 60 , right parenthesis Over "a" Subscript, "b" , Baseline , EndFractiontmax=60−f′60ab
equals=
9090
4
Expression 5: "v" Subscript, "m" "a" "x" , Baseline equals "f" Subscript, 60 , Baseline left parenthesis, "t" Subscript, "m" "a" "x" , Baseline , right parenthesisvmax=f60tmax
equals=
91.2 8 7 2 6 3 0 3 5 691.2872630356
5
Expression 6: "y" equals "v" Subscript, "m" "a" "x" , Baseline left brace, "t" Subscript, "m" "a" "x" , Baseline less than or equal to "x" , right bracey=vmaxtmax≤x